Pinnacle PCTV 450e device start Problem


I am new here..
My Problem is to start my Pinnacle PCTV 450e in ProgDVB.
When i click start/activate, i get the error that it has not been startet.
It worked before, but i don't know why it isn't working now.

This Problem appears only on 32Bit Version of ProgDVB
On 64Bit i can start the Device, but i can't get Sound on AC3 Channels.

Does somebody know a solution?

Kind regards