FMS sim question

Hey guys,
I have been using FMS since friday, and I can hover, fly out and back and in circles and land every "fixed pitch" and 3D bird I could download.

I cant seem to import any of the photo-realistic landscapes. I get it in the right folder and when I select it in FMS, I get a "floating point error-pilot position [some numbers]. and I have to select one of the crummy maps and close the program and re open to get back to flying.

I know its freeware and I shouldnt expect the world, but I feel like this should work. Maybe ill bite the bullet with clearview.
PC Specs: athlon 2400+ (OC'd to 2.16GHz)
2GB PC 3200
GeForce 7900 GT 256mb
Plenty of HDD space

Any thoughts?

Try to reinstall FMS. It helped me

Take a look at "HeliSimRC" it's pretty cool.