Need helps please.
I am trying to setup check-in/ checkout document via office integration.
Under file management click 'Edit in Office' option this will open up excel but in [Compatibility Mode] 
After file has been modified and when I try to Check In this document via 'Excel Add-Ins Check In'  Microsoft Excel has stopped working and following by Microsoft Dialog "Do you want to send more information about the problem? And then Excel document restarting but nothing happening and document still show as checked out.

Any ideas about these problems please let me know. Thank you very much.

 
I am running EPiServer 6.1.379.0 Relate Plus
Visual Studio 2010 and .NET4
Browser IE9
Microsoft Office 2010