My work group runs OrCAD with success, and I have also. But my installation stopped producing netlists. Symptoms are:
Netlist files directory value is not persistent -- I have to re-enter it.
Same for location of allegro.cfg.
Press OK, system is busy for about a second, and then nothing. System log remains blank. No files created.
I run as administrator. Several reinstalls have not fixed it. All my settings are same as other people in work group who can run netlists. I experiment with same proven DSN files.
I am quite flummoxed. Perhaps there are obscure registry entries affecting me? Do I need to rebuild my Win7 system?
Try and see if it fixes your issue - Do not execute the tool as Adminstrator. Windows 7 UAC restricts Administrator from certain processes.