I have the same problem. I'm running XP Professional with all the latest updates. I have a HTC Incredible. I've got the latest HTC Sync software. I've done it all exactly by the instructions 4 times now. That includes uninstalling software, rebooting the PC, disabling antivirus and spyware, re-installing, rebooting just for good luck, reconnecting the Droid, switching the "connect to pc" to "HTC Sync". When I try to start the sync, the pc says, "CAPI_Worker module encountered a problem and needs to close..." After the initial try, both Sync now and Sync manager simply do NOTHING. In the bottom right corner you see that the phone is connected (it changes from Disc to the name). The application installer works. I am desperate to sync my Outlook 2007 contacts. I use them in my business. I've got them all categorized, etc. Please help? HTC Helpdesk person had "never heard" of the CAPI module problem, yet it's all over the various forum. Hmmm... Help? Thanks!