It might pay you to do a manual search through your PC to double check the tool has removed all the drivers. You may also want to check in Add/Remove Programs for any drivers that haven't been removed either.
As stated, you can only have one lot of drivers installed at the same time, eg, all the Ascom drivers for Windows, MaxIm etc, or all the TVDE drivers for Windows, MaxIm etc.
I am using the second lot of Ted's drivers with no problems, as with the first, and you select QHY8TVDE in Nebulosity. I don't, at this stage, see a need to use Ascom drivers.
