Commands not working

[mjones]

I'm running ACAD Electrical 2012, with XP operating system. Everything worked OK when I first upgraded from 2011 but for several months now ACAD will not respond to my mouse selecting icons, there is no undo history and doesn't remember my projects worked on. I can spell out the command and it works but that get cumbersome. I have deleted the whole program and reinstalled it several time but I haven't been able to solve the problem. Any help would be appreciated.

[mjones]

It look like only anything associated with  AutoCAD Electrical commands is not working. I can pick normal ACAD commands like draw line and it works. UNDO still will not work have to pick the line and delete it.