What is the type of file you've been trying to use? Some aren't compatible, as far as I know. Have you used this file, or something of the same type, before?
Don't worry, you'll learn about new functions next time you print something new I run into similar issues every now and then, but that's what makes it interesting.
I'm sorry for the Neanderthal-tier question, but... What is a 3D mouse and how does it work? Do you wave it in the air or do you run it on your table like a normal mouse, just with a throttle or button to move in the third dimension? Most results I found on google are unrelated...
Thanks for the explanation and solution to the problem, I had the same issue with a couple 3ds files that, of course, wouldn't load. I'll run them through the convertor and report on what happens!