The normal steps when updating to a new mame version are (assuming you got already a profile based on a mame binary):

- load profile, profiler detects new exe and updates its data
- go to scanner, run a scan with all check/fix options to fix all fixable stuff. You should end with only missing (recently added sets to mame) sets and not-fixable problems
- Now you can decide how to add the new stuff. The rebuilder is the prefered method but keep in mind it's file based as described in the other post.

Generally if you only have a few sets, you should either

a) go to scanner->scan results->set information (button in left bottom corner of tree window) and limit the sets.
Only enabled sets will be scanned / rebuilt / merged etc.

or b)
keep all sets enabled and if you don't like millions of missing sets reported, turn off scanner->popupmenu->view->show all missing sets.


Roman Scherzer