We are using umbraco 6.1.6 and DAMP version 2.7.0.0 the media section has a good few thousand images and the tree in media section takes a couple of seconds to load.

However in DAMP the tree takes an awfully long time to load and it then hangs.

Using elmah.io found the following exception

System.InvalidOperationException: Failed to handle request. ---> System.InvalidOperationException: Unable to handle request. ---> System.InvalidOperationException: Method DigibizService.GetInitDigibizTreeData can not be reflected. ---> System.InvalidOperationException: There was an error reflecting 'GetInitDigibizTreeDataResult'. ---> System.NotSupportedException: The type System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] is not supported because it implements IDictionary. at System.Xml.Serialization.TypeScope.GetDefaultIndexer(Type type, String memberInfo) at System.Xml.Serialization.TypeScope.GetCollectionElementType(Type type, String memberInfo) at System.Xml.Serialization.TypeScope.ImportTypeDesc(Type type, MemberInfo memberInfo, Boolean directReference) at System.Xml.Serialization.TypeScope.GetTypeDesc(Type type, MemberInfo source, Boolean directReference, Boolean throwOnError) at System.Xml.Serialization.XmlReflectionImporter.ImportMemberMapping(XmlReflectionMember xmlReflectionMember, String ns, XmlReflectionMember[] xmlReflectionMembers, Boolean rpc, Boolean openModel, RecursionLimiter limiter)

Any ideas on what's going on?

Regards

Ismail