ProgDVB64 and ProgDVB32 crash on Vista 64bit and Win7 64bit

#1
Both free versions (32 and 64 bit) crash permanently on Vista 64 Ultimate and Win7 64 Ultimate during the loading process even after a reinstallation from scratch. This has been happening since at least version 6.70.
Is there a command line switch to narrow down the problem?
I'm using the BDA driver version 3.12.00.00.a of Terratec DT USB XS Diversity.
I have no problems with the 32bit free version on XP32 on the same hardware when I disable the second receiver.