Getting the PPSieve WUs to run on ATI cards

[Mr. Hankey]

Here is the GPU thread.

When I try to run PG, I get "Unrecoverable error for result pps_xxx ( - exit code - 150 0xffff6a))"

When I try to run Collatz, I think the exit code was ( 1 ). Both error off with computation errors. I haven't tried any other projects. I wonder if the Sapphire brand card may have some differences that cause the errors.

All my cards are Sapphire... I have had no issues with them.