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 Error ‭[1]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[13]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[3]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[9]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[7]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[5]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
 

 Error ‭[11]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[12]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[8]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[10]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
 

 Error ‭[2]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
Unable to display this Web Part. To troubleshoot the problem, open this Web page in a Windows SharePoint Services-compatible HTML editor such as Microsoft Office SharePoint Designer. If the problem persists, contact your Web server administrator.

 Error ‭[6]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)

 Error ‭[4]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.

Error Details:
[WebPartPageUserException: One of the properties of the Web Part has an incorrect format. Windows SharePoint Services cannot deserialize the Web Part. Check the format of the properties and try again.]
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseCompressed(SPWebPartManager manager, XmlNamespaceManager xmlnsManager, Byte[] personal, Byte[] global, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.SerializedWebPart..ctor(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] sharedData, Byte[] userData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Deserialize(SPWebPartManager webPartManager, XmlNamespaceManager xmlnsManager, Byte[] userData, Byte[] sharedData, String[] links, Type type, SPWeb spWeb)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[Exception: Cannot create XmlSerializers for this Web Part.]
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_FailedXmlSerializer()
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.CheckFailedEntry(XmlSerializer& xmlSerializer)
  at Microsoft.SharePoint.WebPartPages.TypeCacheEntry.get_XmlSerializer()
  at Microsoft.SharePoint.WebPartPages.WebPart.ParseXml(XmlReader reader, Type type, String[] links, SPWeb spWeb)