M700 Sync issues

[Guest Terminal]

I recently upgraded my laptop from Vista Home Premium to Business and now my M700 (flashed with Bepe's WM6 Rom) will not sync with it. It will connect via bluetooth or USB however upon connection the laptop tries to install a device driver, fails and then gives the message:

"The class installer has denied the request to install or upgrade this device"

I am pretty much without a clue as to how to solve this issue so any help would be appreciated.