Problem while using service release 9, Windows 7 x64, rhino 4

Hey friends,
I am using a service release 9, Windows 7 x64, rhino 4 – it hasn’t had any updates in quite some time and is running a 0.8.0010 build, which opens up without any problem, but for some unknown reason, the most recent build doesn’t.
I have tried using 2 C++ 2005 and 2010, but this error still keeps popping up.

Rhinoceros 4.0 Rhino.NET Error
Exception Occured in plug-in Grasshopper
Please help me to get rid of this.
Your help is valuable.
Thanks to you.
