Are you sure you are updated to version 2.12 (two point twelve) now or have you only used the auto update button within PFE? if you have used the auto update you may be stuck at 2.6 which doesn't work in Vista or Windows 7 as far as I can remember. Please use the manual accumulative update process shown in the thread below to get to the latest version, future updates via the Auto Update process should then work correctly in the future.
viewtopic.php?f=4&t=12