Newbie question. I find that I have to close the Max editor window and reopen it (to force a save of the .amxd) to get a newly instantiated abstraction to work. I'm on Live 8.2.2 but have Max 6. Is that by design?
Here's a super simple abstraction (choose track, change volume) that illustrates (I'm also attaching the actual maxpat in case that effects the issue).