Under some circumstances, AeroMIDI may crash where an error message box pops up with the header, "Fatal error in gc" and the contents, "GetThreadContext failed". This crash appears to be caused by a conflict between certain antivirus programs and the Unity 3D engine used by AeroMIDI. In some cases, you may be able to avoid this crash by adding the AeroMIDI install folder to your antivirus software’s exceptions list (untested). Please refer to your antivirus software’s documentation on how to do this. There are reports that this doesn’t work in all cases, and some antivirus programs (most notably Avast!) may need to be removed altogether.
It has been reported that software by the following antivirus companies may cause this crash: