If you use a 128x128 gif image with this mov maker, the mov will not output a mov despite it saying it has.
Running the command like so: worlds_mov_maker.exe test.gif will appear to work, and no error is thrown. Temporary files are created in the directory before being quickly deleted and the output line of Use as: test1h*1v*.mov is shown, despite the existence of a test.mov being void.

I am using WINE however I have tested this in an WinXP VM with the same issue.