Thank you, you saved my holidays!
I still have the problem, that i can't install the AMD APP SDK 2.8 Samples.
Following report gets created:
AMD APP SDK Samples
Endgültiger Status: Nicht erfolgr. Version des Elements: 2.8.1214.3 Größe: 155 Mbytes
Thanks for reading!
also i took my old C:/Program Files(x86)/AMD APP/Include , Docs and Lib Directory.
Further more i edited the Cl.h in Include/Cl/ like it's explained in: