We had a report of System Primitive Failed when loading a large .bmp. I tried in Liberty BASIC V4.5.1 and the large file was loaded and saved without error. In Just BASIC V2 it fails. I created a 4000x4000 bmp, 47Mb and ran this code in Just BASIC it does not get past the loadbmp command. It may be a planned limit but just in case there is a bug hiding in there.