I think the resolution of the project doesn't matter. We couldn't find the exact reason of the crash you experienced. (Currently, no crashes in our Windows machines)
It is helpful if you can share the result after re-downloading and re-installing from the above link.
Thanks,
StarUML Team
2015년 7월 11일 토요일 오전 8시 13분 11초 UTC+9, Jon Pearce 님의 말: