post your build_log.txt coleslaw, the answer is in there.
i was getting a similar problem that turned out to be an issue w/the xip not getting inserted, in the temp folder i had all the components of the rom but it wouldn't inject xip and therefore no .nbh in the release folder.
the best way to get help is to post your log file
*check to see if this is corrected in your kitchen also -
http://www.everythingdiamond.info/sh...&postcount=133