Yeh. For me os launcher works 100% of the time if I launch it by clicking on the file ( I have the clickpad nspire) . But if I launch it by pressing enter it freezes 100% of the time.It only got released for OS 3.1 recently actually. Also IIRC it got updated recently to have an higher success rate.
By the way I was not aware that oslauncher worked on os 3.x