FWIW, Folder and file replacements suggested by Sage didn't correct things. A reinstall produced errors and a new parallel install did the same. Server Issue. Fortunately, the IT guy backs an image from this virtual server to another every night. We copied the data files to the backup server, took the bad server off line and put the backup server on line and the customer is functioning again. We are still trying to find out what happened to the original; however, because we can not even do an install from a CD (4.4) there has to be issues on the windows side as well.