Well that's interesting, you're getting the "adl found more devices than opencl" problem. How many GPUs do you have? Just one? Did you change anything in your driver setup at all? What output do you get if you use this http://ck.kolivas.org/apps/cgminer/temp/cgdebug.exe in the cgminer directory the same way you would use cgminer.exe and start with -T ? It will give more information about the devices with lines that look like this: