Im getting a error that I can´t find the source of. Maybe someone here have a idea.
Ill try to mine VTC with a MSI 7950.

When I start the modified cgminer,
It means:

Error -4: Enqueueing kernel onto command queue.
GPU 0 failure, disabling!

When I connect directly over the cgminer.exe it shows some unreal hashrates of 500 mhash and still no accepted shares.