"nextEventMatchingMask should only be called from the Main Thread!"

[halflings]

On Mac OS (Sierra, 10.12.5), on a MacBook Pro (15-inch, 2016)

python -m pysc2.bin.agent --map Simple64

Crashes with the following output:

NSWindowEdgeResizing is off!
2017-08-09 21:06:05.039 Python[2686:52867] ApplePersistenceIgnoreState: Existing state will not be touched. New state will be written to /var/folders/xw/ch07jry12bn15s2bhs2wlvr40000gn/T/org.python.python.savedState
2017-08-09 21:06:05.648 Python[2686:52867] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'nextEventMatchingMask should only be called from the Main Thread!'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff8de062cb __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x00007fffa2c1148d objc_exception_throw + 48
    2   AppKit                              0x00007fff8bff2e82 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 4480
    3   libSDL-1.2.0.dylib                  0x0000000107cb99dc QZ_PumpEvents + 358
    4   libSDL-1.2.0.dylib                  0x0000000107c99866 SDL_PumpEvents + 35
    5   libSDL-1.2.0.dylib                  0x0000000107c99a44 SDL_EventState + 197
    6   libSDL-1.2.0.dylib                  0x0000000107cb82dd SDL_JoystickEventState + 41
    7   joystick.so                         0x0000000107f51db2 joy_autoinit + 50
    8   Python                              0x000000010629a921 PyObject_Call + 99
    9   Python                              0x000000010631de37 PyEval_CallObjectWithKeywords + 165
    10  base.so                             0x0000000107c89c6c init + 268
    11  Python                              0x000000010631a884 PyEval_EvalFrameEx + 26960
    12  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    13  Python                              0x00000001062b8c73 function_call + 350
    14  Python                              0x000000010629a921 PyObject_Call + 99
    15  Python                              0x000000010631aed8 PyEval_EvalFrameEx + 28580
    16  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    17  Python                              0x00000001062b8c73 function_call + 350
    18  Python                              0x000000010629a921 PyObject_Call + 99
    19  Python                              0x000000010631aed8 PyEval_EvalFrameEx + 28580
    20  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    21  Python                              0x000000010631e45e fast_function + 117
    22  Python                              0x000000010631a78f PyEval_EvalFrameEx + 26715
    23  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    24  Python                              0x000000010631e45e fast_function + 117
    25  Python                              0x000000010631a78f PyEval_EvalFrameEx + 26715
    26  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    27  Python                              0x00000001062b8c73 function_call + 350
    28  Python                              0x000000010629a921 PyObject_Call + 99
    29  Python                              0x00000001062a5685 instancemethod_call + 173
    30  Python                              0x000000010629a921 PyObject_Call + 99
    31  Python                              0x00000001062e1d50 slot_tp_init + 64
    32  Python                              0x00000001062defb9 type_call + 182
    33  Python                              0x000000010629a921 PyObject_Call + 99
    34  Python                              0x000000010631a6bc PyEval_EvalFrameEx + 26504
    35  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    36  Python                              0x00000001062b8c73 function_call + 350
    37  Python                              0x000000010629a921 PyObject_Call + 99
    38  Python                              0x000000010631aed8 PyEval_EvalFrameEx + 28580
    39  Python                              0x000000010631e4f1 fast_function + 264
    40  Python                              0x000000010631a78f PyEval_EvalFrameEx + 26715
    41  Python                              0x000000010631e4f1 fast_function + 264
    42  Python                              0x000000010631a78f PyEval_EvalFrameEx + 26715
    43  Python                              0x0000000106313d3e PyEval_EvalCodeEx + 1617
    44  Python                              0x00000001062b8c73 function_call + 350
    45  Python                              0x000000010629a921 PyObject_Call + 99
    46  Python                              0x00000001062a5685 instancemethod_call + 173
    47  Python                              0x000000010629a921 PyObject_Call + 99
    48  Python                              0x000000010631de37 PyEval_CallObjectWithKeywords + 165
    49  Python                              0x000000010634a63a t_bootstrap + 70
    50  libsystem_pthread.dylib             0x00007fffa370f93b _pthread_body + 180
    51  libsystem_pthread.dylib             0x00007fffa370f887 _pthread_body + 0
    52  libsystem_pthread.dylib             0x00007fffa370f08d thread_start + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
[1]    2686 abort      python -m pysc2.bin.agent --map Simple64

[halflings]

Since the error seems to be related to a PyGame call, I have pygame==1.9.3

[Stexan]

I have the exact same problem, pygame is also 1.9.3

[TueChristensen]

Same problem for me on similar mac and os.

[americodias]

Same here. macOS 10.12.6 with Python 2.7.13 and Python 3.6.2

[tomekowal]

It looks like on OSX OpenCV allows rendering only in main thread. I made a change suggested by error message and moved rendering to main thread. That made it run for me here: https://github.com/tomekowal/pysc2
You can clone the repo and as long as you are pysc2 directory examples should work. I am not sure how would it affect linux and windows, so I am hesitant to submit a proper PR. If anyone is going to seriously work on the issue, this commit might be a good start.

[Aizee]

Thanks @tomekowal that fixed it for me. Anybody else trying this make sure to 'pip uninstall pysc2' first before you install the fix

[americodias]

tomekowal it worked for me too. Thanks

[tewalds]

Fixed in 509f607