Error with the Reporting Designer

[PICKUP]

HI,

I have a probleme with the reporting designer in Visual Studio 2012 (cf  joined png)
I have 3 reports in my project i can't open the more used one. the others can be opened.
I can modify the failed report in code behind, I can use it in my application but can't update it per the designer.

this report was made with the Q2 2012 dll ( 6.1.12.611), i updated my telerik dlls in Q2 2013(7.1.13.612) 
the problem persists. one of three reports remains unupdatable.


I have this error message:
 Impossible de convertir l'objet de type
'System.Collections.Generic.List`1[Telerik.Reporting.ObjectDataSourceParameter]'
en type
'System.Collections.Generic.IList`1[Telerik.Reporting.ObjectDataSourceParameter]'.

à System.RuntimeType.TryChangeType(Object value, Binder binder, CultureInfo
culture, Boolean needsSpecialCast)
à System.RuntimeType.CheckValue(Object
value, Binder binder, CultureInfo culture, BindingFlags invokeAttr)
à
System.Reflection.RtFieldInfo.UnsafeSetValue(Object obj, Object value,
BindingFlags invokeAttr, Binder binder, CultureInfo culture)
à
System.Runtime.Serialization.SerializationFieldInfo.InternalSetValue(Object obj,
Object value, BindingFlags invokeAttr, Binder binder, CultureInfo culture)
à
System.Runtime.Serialization.FormatterServices.SerializationSetValue(MemberInfo
fi, Object target, Object value)
à
System.Runtime.Serialization.ObjectManager.CompleteObject(ObjectHolder holder,
Boolean bObjectFullyComplete)
à
System.Runtime.Serialization.ObjectManager.DoNewlyRegisteredObjectFixups(ObjectHolder
holder)
à System.Runtime.Serialization.ObjectManager.RegisterObject(Object
obj, Int64 objectID, SerializationInfo info, Int64 idOfContainingObj, MemberInfo
member, Int32[] arrayIndex)
à
System.Runtime.Serialization.Formatters.Binary.ObjectReader.RegisterObject(Object
obj, ParseRecord pr, ParseRecord objectPr, Boolean bIsString)
à
System.Runtime.Serialization.Formatters.Binary.ObjectReader.ParseObjectEnd(ParseRecord
pr)
à
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Parse(ParseRecord
pr)
à
System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
à
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler
handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain,
IMethodCallMessage methodCallMessage)
à
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream
serializationStream, HeaderHandler handler, Boolean fCheck, Boolean
isCrossAppDomain, IMethodCallMessage methodCallMessage)
à
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream
serializationStream)
à
System.Resources.ResXDataNode.GenerateObjectFromDataNodeInfo(DataNodeInfo
dataNodeInfo, ITypeResolutionService typeResolver)
à
System.Resources.ResXDataNode.GetValue(ITypeResolutionService typeResolver)
à
System.Resources.ResXResourceReader.ParseDataNode(XmlTextReader reader, Boolean
isMetaData)
à System.Resources.ResXResourceReader.ParseXml(XmlTextReader
reader) 
  What can I do more?

[Nasko]

Hello Michel,

Try to run the Upgrade Wizard if you haven't done so already.
If the issue persists it would be best to open a support ticket where you can attach the problematic report. Once we review it, we would be able to provide you with more information.

Regards,
Nasko
Telerik