Hi Hamish, usually no crash dump is related to running out of memory since it also requires memory to create the crash dump in the first place.

The crash dumps will try to go in the install folder but on some operating systems like Vista and Windows 7 it won't be allowed to be created there and in that case they'll go to your Temp folder instead, type in %tmp% in the search box on the start menu to go to there, and look for any files named moi_report1.zip, moi_report2.zip, etc... and please send those over to me at moi@moi3d.com

- Michael