microsoft .net framework error

I have installed custom add-in on windows 7 x64 machine. It works fine when I am logged in to the machine. When there is a different user, I am getting this attached error message when add-in runs. User has full rights on the machine.

I googled about this and no good information came out of it.

If anyone has come across this, please let me know.

Thanks in advance

SolidworksApi macros