this is most likely because you have to specifically compile the plugin against the concrete version of Maya SDK you’re using. Otherwise it won’t load up the plugin.

thank you for this post, just going to start digging in Dotnet for development
however, i did try to put the DLL files you said in the bin folder but still maya wont let my import the modules…

import CLR.System
# Error: ImportError: No module named CLR.System #

could this because i use maya 2010 and it uses 2.6 python?