Sky Star 2 device not started

This seems to be a common error but I haven't found the solution in any of the threads.
I have a Technisat Sky Star 2 and Win 7 64 running.
The card works fine with the DVB Viewer softare that came with it.
But I am used to ProgDVB and like it better.
Problem is I always get this message: WDM device not started.
I tried to uninstall and reinstall.
I tried to install the BDS drivers that I downloaded from Technisat but it tells me that this is not supported (I right-click on SkyNetBDA.inf and select "install").

So, how do I either get around the WDM-thing (under settings - TV sources I have Sky star (WDM)) or install the BDA drivers?

Any help would be much appreciated.