So I have had this problem with every version of moss. Currently on Windows 10 with x64 MOSS download. I load the program and let it do its thing and once it minimizes I load into rainbow. however after a few minutes or so MOSS just crashes with no reason, every time. I will try to attach log files. Do not know what you exactly need so let me know if its not enough. Seen multiple people with this problem on the forums but no answer has been given yet.