Widget header mages missing, font & color choices won't save… at wits end

Hi everyone.
I’ve turned off every plugin, reinstalled mystique, verified the invisible images are there on the server.
I have used this theme before without issue, with the same plugins on WP 3.0.
I can change the layout from 1-3 columns fine.
Also, I can preview my changes and everything looks normal until I save.

php v. 5.1.49
permissions are default 644 (same as working version on 3.0), but I’ve tried up to 777
Don’t know what else to look for.
Please help.

Site: https://d407915.u102.hosting.ca

Update: Oddly, the 404 page looks right

Update 2: I think I found the issue, it’s gotta be the stylesheet url…
The 404 page calls:
@import “https://d407915.u102.hosting.ca?mystique=css”;
but every other page calls for:
@import “https://gogiegirl.com/about/contact/?mystique=css”;
But how can I change that?