Okay that is helpful, that the Beta works for you and this does not.
Let's stick with CK and get it running first since it has the least variables to the start up.
Okay let's try some standard things.
1) Rename the AVI folder to AVI_back
2) Set the color depth to 16BIT
3) Turn off everything in the background like E-mail/ICQ/Messenger, Virus protection and everything in the system tray beside the clock.