Error in handle_error /7.7

I'm getting the following error while running some code that previously worked... nothing is printed about what the error is, and then I get an abort trap. The actual error seems to be coming from non- pike code, probably an objective c exception being thrown, but it's hard to tell for sure, as the code should convert the exception to an error. I can't think of a reason why that wouldn't be working. Is it possible that handle_error is being called when an error hasn't been thrown, but maybe something else bad has happened?

Error in handle_error in master object! Attempting to dump raw error: (may fail) Fatal in exit_on_error!