FCP 10.5.3 CRASH on Rich's 2017 iMac 27: Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Thread 1 Crashed: 0 libsystem_c.dylib 0x00007fff203cd4c9 __abort + 169 1 libsystem_c.dylib 0x00007fff203cd420 abort + 135 2 libGPUSupportMercury.dylib 0x00007fff4633f096 gpusGenerateCrashLog.cold.1 + 95 3 libGPUSupportMercury.dylib 0x00007fff4633621c gpusGenerateCrashLog + 89 4 com.apple.AMDRadeonX4000GLDriver 0x0000000108f7a302 gpusKillClientExt + 9 5 libGPUSupportMercury.dylib 0x00007fff463375e7 gpusSubmitDataBuffers + 164 6 com.apple.AMDRadeonX4000GLDriver 0x0000000108f5492c glrATI_Hwl_SubmitPacketsWithToken + 112 7 com.apple.AMDRadeonX4000GLDriver 0x0000000108f5018d glrTerminateContext + 42 8 libGPUSupportMercury.dylib 0x00007fff463377d1 gldDestroyContext + 114 9 GLEngine 0x00007fff6bcd8b91 gliDestroyContext + 127 10 com.apple.opengl 0x00007fff6ba96276 CGLReleaseContext + 178 11 com.apple.AppKit 0x00007fff230e2317 -[NSOpenGLContext dealloc] + 62 12 com.apple.AppKit 0x00007fff23418f4b _NSOpenGLContextClearThreadContext + 56 13 com.apple.AppKit 0x00007fff22f27f07 __NSAppKitFinalizeThreadData + 380 14 libsystem_pthread.dylib 0x00007fff2047698d _pthread_tsd_cleanup + 487 15 libsystem_pthread.dylib 0x00007fff20478f65 _pthread_exit + 70 16 libsystem_pthread.dylib 0x00007fff20476736 _pthread_wqthread_exit + 66 17 libsystem_pthread.dylib 0x00007fff204754f9 _pthread_wqthread + 470 18 libsystem_pthread.dylib 0x00007fff2047442f start_wqthread + 15 10.4.1 CRASH ON JOE'S 2017 IMAC 27: Exception Type: EXC_CRASH (SIGABRT) Thread 65 Crashed:: Dispatch queue: _NSCGSWindowLocallyRenderedLayerSurfaceRenderingQueue 0 libsystem_kernel.dylib 0x00007fff71be0b6e __pthread_kill + 10 1 libsystem_pthread.dylib 0x00007fff71dab080 pthread_kill + 333 2 libsystem_c.dylib 0x00007fff71b3c1ae abort + 127 3 libGPUSupportMercury.dylib 0x00007fff627380f1 gpusGenerateCrashLog + 168 4 com.apple.AMDRadeonX4000GLDriver 0x000000010d19ff2b gpusKillClientExt + 9 5 libGPUSupportMercury.dylib 0x00007fff627394d6 gpusSubmitDataBuffers + 184 6 com.apple.AMDRadeonX4000GLDriver 0x000000010d177332 glrATI_Hwl_SubmitPacketsWithToken + 154 7 com.apple.AMDRadeonX4000GLDriver 0x000000010d17410f glrTerminateContext + 26 8 libGPUSupportMercury.dylib 0x00007fff627396e0 gldDestroyContext + 114 9 GLEngine 0x00007fff53c65ed2 gliDestroyContext + 128 10 com.apple.opengl 0x00007fff53c3f8ae CGLReleaseContext + 187 11 com.apple.opengl 0x00007fff53c3ea7a CGLDestroyContext + 26 12 com.apple.QuartzCore 0x00007fff54b27b4a view_destroy_state(_CAViewState*, bool) + 206 13 com.apple.QuartzCore 0x00007fff54acd4c1 view_draw(_CAView*, double, CVTimeStamp const*, bool) + 5581 14 com.apple.QuartzCore 0x00007fff54ac67d3 CAViewDraw + 208 15 com.apple.AppKit 0x00007fff475155f9 ___NSCGSWindowLocallyRenderedLayerSurfaceScheduleForDrawing_block_invoke + 254 16 libdispatch.dylib 0x00007fff71a5e64a _dispatch_call_block_and_release + 12 17 libdispatch.dylib 0x00007fff71a56e08 _dispatch_client_callout + 8 18 libdispatch.dylib 0x00007fff71a69ed1 _dispatch_continuation_pop + 472 19 libdispatch.dylib 0x00007fff71a61783 _dispatch_async_redirect_invoke + 703 20 libdispatch.dylib 0x00007fff71a589f9 _dispatch_root_queue_drain + 515 21 libdispatch.dylib 0x00007fff71a587a5 _dispatch_worker_thread3 + 101 22 libsystem_pthread.dylib 0x00007fff71da8169 _pthread_wqthread + 1387 23 libsystem_pthread.dylib 0x00007fff71da7be9 start_wqthread + 13