StacktraceTop:glGetError () from /usr/lib/libGL.so.1 ffi_call_SYSV () ffi_call () from /usr/lib/python2.6/lib-dynload/_ctypes.so _CallProc () from /usr/lib/python2.6/lib-dynload/_ctypes.so ?? () from /usr/lib/python2.6/lib-dynload/_ctypes.so
StacktraceTop: glGetError () from /usr/lib/libGL.so.1 python2. 6/lib-dynload/ _ctypes. so python2. 6/lib-dynload/ _ctypes. so python2. 6/lib-dynload/ _ctypes. so
ffi_call_SYSV ()
ffi_call () from /usr/lib/
_CallProc () from /usr/lib/
?? () from /usr/lib/