Aha - I've been messing around with the alpha version. I hate to say it, but none of the FO3 mods I've tried work with it. CUBE, RobCo, Busworld, MHO, nothing. The only esm's supported were the DLC from Bethesda - I'm not sure if anyone else has tried messing with the alpha version like this, but I just wanted to throw it out there since that might become a big issue later on in development if mods are going to have to be majorly overhauled just to be made compatible.
With that said, the alpha version has been as stable as a table thus far and is a big improvement.
EDIT - I figured out how to get the mods working in the alpha version... see this:
http://www.taleoftwowastelands.com/content/universal-fo3-mod-compatibility
