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OpenCL examples crash at clFlush in openCLExecuteKernel

OpenCL example example_ocl_tvl1_optical_flow crashes on my Mac system which has the following config: OSX 10.9.5 Graphics card: ATI Radeon HD 5750 with 1024MB CPU: 2.93 GHz Intel Core i7

I built OpenCV from source and tried running the example_ocl_tvl1_optical_flow example. It crashes either in the first loop or after it does a couple of loops but every time in the same place. Here is the crash log: example_ocl_tvl1_optical_flow crash log.png

Even the example example_ocl_pyrlk_optical_flow crashes in the same place. Is this a known issue? Is there something that needs to change with my configuration or setup?

Please let me know if you want me to provide more information.

Thanks!