I changed the config a bit and now I get:
Warning: unknown property "use_gpu" in configuration file.
I'm now mining primecoin!
GeneratePrimeTable() : setting nSievePercentage = 1, nSieveSize = 100000
Share thread started
GeneratePrimeTable() : prime table [1, 100000] generated with 9592 primes
Available CPU mining algorithms: hp7
Using default: hp7
Creating 4 CPU threads.
1...Warning: can't set thread priority
2...3...4...done
List of platforms:
0 AMD Accelerated Parallel Processing
Using platform number 0
Using devices 0, 1, 2, 3
OpenCL device 0........
Compiling kernel... this could take up to 2 minutes.
"/tmp/OCLn5hmbH.cl", line 338: warning: nested comment is not allowed
/*/
^
"/tmp/OCLn5hmbH.cl", line 672: error: too many arguments in function call
uint16 a = Mul_512b_32b(FixedMultiplier,FermatNumbers[get_global_id(0)>>1],ORIGIN_LENGTH);
^
1 error detected in the compilation of "/tmp/OCLn5hmbH.cl".
Frontend phase failed compilation.
2013-09-10 18:41:27 Error: Error building OpenCL program
primecoin.conf:
host 127.0.0.1
port ****
user ****
pass ****
protocol primecoin
worksize 256
threads_per_gpu 1
cpu_mining_threads 4
vectors 2
primecoin_address ****
use_gpu true