Webpartfehler: Der Steuerelementtyp 'GR.WebParts.Multimedia.Common.Filter.FilterCriteria`1[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]' ist auf dieser Seite nicht zulässig. Korrelations-ID: e5c631a2-34f0-30c2-7ad2-e317d0e7665e.

Fehlerdetails:
[ArgumentException: Die serialisierten Daten sind ungültig.]
  at Microsoft.SharePoint.WebPartPages.SPObjectStateFormatter.Deserialize(Stream inputStream)
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartDeserializer.LoadInitialWebPart()
  at Microsoft.SharePoint.WebPartPages.BinaryWebPartDeserializer.Deserialize()
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)

[UnsafeControlException: Der Steuerelementtyp 'GR.WebParts.Multimedia.Common.Filter.FilterCriteria`1[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]' ist auf dieser Seite nicht zulässig. ]
  at Microsoft.SharePoint.WebPartPages.SPSerializationBinder.IsAllowedType(Type type)
  at Microsoft.SharePoint.WebPartPages.SPSerializationBinderBase.CheckIfAllowedType(Type type)
  at Microsoft.SharePoint.WebPartPages.SPSerializationBinderBase.BindToType(String assemblyName, String typeName)
  at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Bind(String assemblyString, String typeString)
  at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo assemblyInfo, String name)
  at System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String objectName, String[] memberNames, BinaryTypeEnum[] binaryTypeEnumA, Object[] typeInformationA, Int32[] memberAssemIds, ObjectReader objectReader, Int32 objectId, BinaryAssemblyInfo assemblyInfo, SizedArray assemIdToAssemblyTable)
  at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped record)
  at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
  at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
  at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
  at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream)
  at Microsoft.SharePoint.WebPartPages.SPObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader)
  at Microsoft.SharePoint.WebPartPages.SPObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader)
  at Microsoft.SharePoint.WebPartPages.SPObjectStateFormatter.Deserialize(Stream inputStream)