Mai??.tmp files being produced in game dir (1.4)

I have this intermittent problem, where mai??.tmp files, (?? being some two-digit number that appears to be somewhat random.) are appearing in my game folder the file is actually a copy of my main.cs file. It doesn't happen every time so I can't determine when or why does anybody else have this problem or know what might be causing it? I don't really know if it's Torque or my own code, but a search through the SDK source code does not reveal anything writing files with a tmp extension, neither does my script. My game does not appear in the least affected by the problem, but it is odd that copies of my main.cs file are just building up in my game directory.