Hi Alan,
if Gautams suggestion still leaves remaining issues I would suggest that perhaps your installation has been corrupted or you should double check that you are running as admin and ccs has access to the Program Files directory (which ususally has odd permissions on it).
If you want to try to reload ccs on your pc, I would also suggest migrating to a newer version from your old one. Ideally 5.5 however even a move to 4.2.5 would likely help you as well. This should be done as a full fresh installation.
Best Regards,
Lisa