ERROR: clGetPlatformIDs() -1001

[ersa]

Hello,

I working on win Xp_32 and Radeon HD5870
I just update my drivers to 12.8 and now I recive error "clGetPlatformIDs() -1001"

On drivers 11.3 and ocl 0.08 wverythink was working perfect.
Should I go back with drivers or there is another way?

Thank you!

BR
ERSA
Seb