Online Service Google Analytics 'Collection was modified; enumeration operation may not execute'

I recently created some reports using the online service Google Analytics. today when I went back I got the error

Unexpected error: Collection was modified; enumeration operation may not execute.
Details:
Microsoft.Mashup.Evaluator.Interface.ErrorException: Collection was modified; enumeration operation may not execute. ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Collection was modified; enumeration operation may not execute. ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Collection was modified; enumeration operation may not execute. ---> System.InvalidOperationException: Collection was modified; enumeration operation may not execute. ---> System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.Enumerator.MoveNext()

I had a go at starting again and reconnecting but I just get the error 'Collection was modified; enumeration operation may not execute'

Im not sure what to do now. Is google Analytics via desktop now not available?