Yeah, we’ll probably want to improve the error logging. MWEdit has two main forms of error logging: a custom assert function and then the error handler. One is supposed to output to the log file while the other sends it to standard out but neither one is fully implemented. In fact, the error logging was already commented out in several places and nonexistent in others. Something we’ll want to look into at some point.
Ugh. Okay, so the best we can hope for at the moment, I guess, is that the cause will materialize as we clean things up. It’s also possible it’s an edge case that only materialized due to updating the compiler version in use and will be fixed as we continue to update the code to modern standards.