Backtrace of driver

(lldb) bt
* thread #1: tid = 0x4307, 0x00007fff8d331866 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'opencl_runtime', stop reason = signal SIGABRT
  * frame #0: 0x00007fff8d331866 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff8f42835c libsystem_pthread.dylib`pthread_kill + 92
    frame #2: 0x00007fff8ca27b1a libsystem_c.dylib`abort + 125
    frame #3: 0x00007fff9496f1ca libGPUSupportMercury.dylib`gpusKillClient + 111
    frame #4: 0x00007fff9496fb51 libGPUSupportMercury.dylib`gpusQueueSubmitDataBuffers + 155
    frame #5: 0x00001234801ea0a0 AMDRadeonX3000GLDriver`___lldb_unnamed_function8559$$AMDRadeonX3000GLDriver + 230
    frame #6: 0x00001234801e9f86 AMDRadeonX3000GLDriver`___lldb_unnamed_function8558$$AMDRadeonX3000GLDriver + 30
    frame #7: 0x00001234801ea34f AMDRadeonX3000GLDriver`gldFinishQueue + 41
    frame #8: 0x00007fff94d5eaaa OpenCL`___lldb_unnamed_function83$$OpenCL + 46
    frame #9: 0x00007fff94d7adad OpenCL`___lldb_unnamed_function553$$OpenCL + 25
    frame #10: 0x00007fff8e86a28d libdispatch.dylib`_dispatch_client_callout + 8
    frame #11: 0x00007fff8e870a18 libdispatch.dylib`_dispatch_barrier_sync_f_slow + 460
    frame #12: 0x00007fff94d7ae94 OpenCL`clFinish + 90
    frame #13: 0x0000000100005730 raytracer`OpenCL::enqueue_kernel_range(this=0x00007fff5fbff920, id=<unavailable>, num_args=<unavailable>, arg_values=<unavailable>, arg_sizes=<unavailable>, dim=<unavailable>, work_size=<unavailable>) + 192 at opencl.cpp:144
    frame #14: 0x0000000100003f03 raytracer`RenderSession::render(this=0x0000000100009a08) + 643 at session.cpp:44
    frame #15: 0x000000010000341d raytracer`main(argc=<unavailable>, argv=<unavailable>) + 621 at window.cpp:136