Hoo! Okay, played through a lot of the campaign now on LS' exe.
Current analysis is that it's very stable for short runs but degrades like hell over entended play periods.
I played a whole bunch of missions, and after a while I got littly bitty errors - First got a little Windows dialog pop up saying a briefing icon was missing, and in the briefing the ship icon for the Vasudan Ptah was missing from the map.
As things went on, it started to get worse - ANIs were not displaying for weapons like the Prometheus S and Mekhu, and by the time I got to the mission where you're trying to lure a Sathanus into a fight, I was getting entire missing ships!
In this one battle, there's an SC Cain, but it doesn't exist in-game! You can target it and fire at it, but the model is *not there!* - Turrets, everything is missing, and only the huge engine glow can be seen.
Normal weapons fire and beam cannon fire appears to go right through this empty space where the ship should be, but missiles still detonate.
(Have screen shots if you want

)
I went to quit back to the main menu )so I could quit the game and post this

), and got a crash-to-desktop with this dialog:
"Error: Could not load in Vhallm!
File:C:\projects\fs2_open\code\MenuUI\MainHallMenu.cpp
Line: 965
Call stack:
------------------------------------------------------------------
------------------------------------------------------------------"
Report ends

As an aside - Is there a way to disable the new engine flares? They're real pretty from long range but in a mass close-up furball, all I can see are the engine flares!!
I'm gonna start testing Bob's newest exe now, see how that holds up
