amd hd5470 ERROR: clBuildProgram() -11

hello o mighty cat, i'm experiencing the following..

STOP! Unsupported or incorrect installed GPU driver detected!
--force
Kernel /opt/oclhashcat-amd/kernels/4098/m2500.Cedar_1214.3_1214.3.kernel not found in cache! Building may take a while
ERROR: clBuildProgram() -11

Lenovo G565 laptop, ati radeon mobility hd5470 afaik
http://news.eu.lenovo.com/pr/lenovo-we/d...ncid=27824

Arch GNU/Linux, local/catalyst-utils 14.6-10, local/opencl-catalyst 14.6-1

while pyrit with cpyrit-opencl-svn 308-1 works fine.
Not that quick tho, Running benchmark (2141.9 PMKs/s)...