That error:
Internal Error - Option.xml GUID not found (Sprint 3.35 ....
..was solved by replacing the Sprint carrier as described in this thread:
http://forum.ppcgeeks.com/showthread.php?t=44756r
I've no doubt that the specific line in red from shaggylive's post is the culprit, but replacing the whole damn file was quick & easy....especially since the first thing I did in the kitchen was switch the carrier to Alltel.
Still good stuff guyz, well worth effort. I've been usin this nueROM w/ Scotts M2D (among other things) for days now; Rock Solid, averaging 17-21MB free. Awesome.