since Edius 4.51 I haven't been able to uninstall the Canopus DV driver from the control panel. It goes through the motions and prompts to reboot but still appears on the list after restart.

I need to downgrade to 4.24 to restore REX RT functionality but I am not able to install the previous DV driver as the setup aborts saying there is a newer version of the driver installed.

Is there a scrubber utility or a list of files I can delete manually that will remove this 'never version' so I can revert back to the 4.0 DV driver that worked great in 4.24?

unfortunately I didn't image the drive prior nor did I have system restore running so I'm trying not to reformat...

any ideas?