[SOLVED] Import settings works for defaults but not exported eettings

I seen a couple of other people having trouble with this, too.

When I try to upload an exported set of styles/settings, I get the error "____ doesn't appear to be a valid Atahualpa Settings File"

The pre-set defaults work just fine.

Using:
3.5.3
Php 5.2.13
MySQL: .0.91-community
hosted on inmotion