These stripes along with your application crashing indicate that most likely parts of the RAM where your application is loaded are overwritten by something, either by it itslef or by another program.
Since you seem to be able to reproduce this, look if the same occurs when you have no other program running and have booted with as less System Extensions as possible or the OS standard set.
If it doesn't happen any more, some other application which is no longer running now did screw it up.
If it still happens at that point, your application is corupted and reinstalling it should help. If it's still not working and there's a preference file, try to delete it or move it to another place.