E-Mail Redirection using OWA not working (Exchange 2010)

Hi,

Everytime a user wants to set up e-mail redirection using OWA, you get the message "Anerror occurred while processing your request. Please try again in afew minutes"

In the the Event Viewer you get the following events:

1.

Event ID: 5

Source: MSExchange Control Panel

System.TypeInitializationException: "Microsoft.Exchange.Management.ControlPanel.ErrorHandlingUtil" ---> System.ArgumentException:The requested value "true" could not be found.
   at System.Enum.Parse(Type enumType, String value, Boolean ignoreCase)
   at Microsoft.Exchange.Management.ControlPanel.ErrorHandlingUtil..cctor()
  
   at Microsoft.Exchange.Management.ControlPanel.ErrorRecord.set_Message(String value)
   at Microsoft.Exchange.Management.ControlPanel.ErrorRecord.set_Exception(Exception value)
   at Microsoft.Exchange.Management.ControlPanel.ErrorInformationBase..ctor(Exception exception)
   at Microsoft.Exchange.Management.ControlPanel.ErrorRecord..ctor(ErrorRecord errorRecord)
   at Microsoft.Exchange.Management.ControlPanel.PSCommandExtension.<Invoke>b__0[O](ErrorRecord errorRecord)
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Microsoft.Exchange.Management.ControlPanel.PSCommandExtension.Invoke[O](PSCommand psCommand, RunspaceMediator runspaceMediator, IEnumerable pipelineInput, WebServiceParameters parameters)
   at Microsoft.Exchange.Management.ControlPanel.DataSourceService.CoreInvoke[T](PSCommand psCommand, IEnumerable pipelineInput, Identity translationIdentity, WebServiceParameters parameters)
   at Microsoft.Exchange.Management.ControlPanel.DataSourceService.NewObject[L,C](String newCmdlet, C properties)
   at Microsoft.Exchange.Management.ControlPanel.InboxRules.NewObject(NewInboxRule properties)
   at SyncInvokeNewObject(Object , Object[] , Object[] )
   at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

System.ArgumentException: The requested value "true" could not be found.
   at System.Enum.Parse(Type enumType, String value, Boolean ignoreCase)
   at Microsoft.Exchange.Management.ControlPanel.ErrorHandlingUtil..cctor()

2.

Event ID: 4999

Source: MSExchange Common

the watson report about to send for process 5748 with the values E12, c-RTL-AMD64, 14.02.0318.004, ECP, M.E.Management.ControlPanel, M.E.M.C.ErrorHandlingUtil..cctor, S.S.Diagnostics.CallbackException, 3470, 14.02.0318.004.
ErrorReportingEnabled: False

Do yout have any idea what i could do?