Wavelab 6 starts and crashes

After updating to the last version of Wavelab6 my computer crashes after Wavelab starts playing a audio file.
Never had a problem from the times of Wavelab2. Never had a issue with this set-up on Windows XP pro.

Went back to earlier versions, but the problem stays. Tried all drivers for Echo fire4 and driver sorts in Wavelab.

All good tips are very welcome!

Thanks David