I got more bogus 9173's on 11.1.3. Now in 11.2 I only get them during real-time bounces (as do many other people). I still get them on larger plug-in heavy sessions occasionally. Especially if I instantiate or simply open an existing plug-in during playback (actions that were never an issue in PT9). PT12 should be a free upgrade for 11 users, since they never actually got 11 fully functional.
