Sorry if this has come up before, I had a search and can't see anything specific about it.
I've got the latest version of MOBAC, and none of the USGS sources seem to be working for me. The tiles are just coming up with big red X's...
I've tried to add a custom source from ArcGIS, and I've got 1 giant world tile...but nothing more than that...
<?xml version="1.0" encoding="UTF-8"?>
<name>USGS National Map - Topo</name>
If someone could help with a custom source file I'd be extremely grateful!