The exact cause of the error seems obvious: Something is trying to access the last item in an empty array.
What is not clear, is where this is happening. The "readable" parts of entry 4 through 7 are red herrings, although it is puzzling why those symbols are present in the executable, and not others. The use of NSArrayM suggests that it is in some OS X specific part of the code (unless whatever compiler has been used turn regular arrays into that), since that appears, from googling, to be an OS X thing. Someone who can debug on OS X, possibly with a debug build, is likely needed to track this down. Or someone with better psychic debugging skills.
