Acrobat 10.1.7 crash by loading plugin with using clr

Hi,

I have develop some plugins using Acrobat SDK with CLR, specified /clr option.

But these plugins causes application crash of Acrobat X, 10.1.7, when trying to close the application.

Simply plugin with /clr option, not loading CLR dynamically, also causes crash of Acrobat.

Please tell me how to avoid this problem.

Regards.