I've been running BHAH for six months on my Windows Vista 64 computer with no issues. I just got back from an extended business trip (one month) and all of a sudden BHAH doesn't work, getting a Fatal Error message with BHAH not being to install initialization files. I've deleted and re-installed CFS3 and BHAH, installed all of the patches, set up to run in XP mode as Administrator, and nothing works. I suspect an automatic update of Vista 64 installed while I was away is the culprit, creating a conflict, however, I've rolled back my system to several restore points with no luck. Any help would be greatly appreciated. Thanks.