Problems with Facetime HD camera.

I have just bought a new MacBook Air 13" and after installing ISPQ videochat program I cannot get any camera connected (the Facetime HD buitl it nor a USB xternal one that worked just fine with my other Mac computers). The new one is a Intel Core i5 with 4 gb 1600 Mhz DDR3 and running OS X 10.8.4.

Camera works fine with PhotoBooth, and apparently with FaceTime and Skype, though I have not tested it in a video call. After installing the ISPQ Videochat the camera does not appear available in the preference settings. i remember than when I bought my first iMac I had to change a setting on the iSight camera drivers (QuickTimeUSBVDCDigitizer), but on my first MacBook Air it worked just fine.

Thx.