It might have to do with the way that I downloaded them, but at this point there's not well, much point, I've verified that both Vue 4 and Vue 5 will not import a dem file larger than the basically the immediate mountain (largest size 2048ish). So at this point the image file option or another actual 3d file seems to be the best option for getting the data into Vue rather than trying to get the dem in (this has always been a bit of a problem for Vue to do flawlessly anyway, it's just a little disapointing that they haven't bothered to improve something that most other terrain programs seem to handle just fine).