DVB-T USB Stick doesn't start

Hi, I have a DigiVox Mini III usb stick and tried a new versions of ProgDVB, but it can't start the stick. There is no Quality and all new scanned TV Stations are lost. But if i start DVBViewer, use the DVB stick, close DVBViewer and start ProgDVB, the Stick works.

I used Version 6.60.0 a long time, because it worked best for me.

edit: I use Win7 64bit, i3 1155

DigiVox chip, driver: Afatech AF9015

edit2: I jus found out, that my tv captures with my hauppauge HD SE2 are corrupted on some positions, so I can't use a new version of ProgDVB, pretty disapointing.