Crash while re-colouring Standard NPC's

Almost every time I've been playing around colouring Standard NPC's in the MA whenever I click the "Save and Continue" option I get that annoying little crash window that pops up.

Are you renaming them before saving them?

As in you do the recoloring, click next then save straight after?

Because that always crashes me too. If on the 2nd screen you add a new name (can be same as old name) it doesn't crash and works fine.

Ok, thanks for the help