I get this info using the tool in the launcher:

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1 OpenCL computing platforms found -- [0] AMD Accellerated Parallel Processing -- GPU OpenCL Devices on this platform: [0] Pitcairn, maximum memory setting 544MB -- [1] Cypress, maximum memory setting 544MB
From which I derive this command line:

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arOpenCLminer.exe -pl 0 -g 0 -m 544 -i SSE4 -u myUsername.1 -myPassword
-- and all it does is start and then exit execution. ? (Really odd, same thing happened with your cuda miner in a test--it ran and then exited immediately.)

What's my error, or what may be wrong?

680 gtx high perf 780-790
cm3 high perf 800-805

With other CUDA miner have 850+ so I use another. Why with this miner GPU usage is 80 100 80 100, not stable 100%.

i used different parameters all resulting in the same behavior:

crash after the line of: will mine 15 round after 500 to support developer

used with platform id 0 and device id 0 ... also used the cmd version directly without the parameters of platform and device.. etc etc i tryed alot ... all the same (-> does not seem to depend on the parameters)

and no exeption is printed - it just hangs and windows informs me that the program stopped working

Hi. thank you!
can you release any windows binary for test?
cygwin installing taking a lot of time.