Throwing exception in microsoft.xaml.behaviour.dll

I have two plugins installed one for Rhino and Other for Grasshopper but when I run grasshopper connector it throws exception in microsoft.xaml.behaviour.dll, in both rhino and grasshopper plugin having same microsoft.xaml.behaviour.dll. If I run only grasshopper plugin and delete rhino plugin it works properly.
Can you please help us how we can handle it?