Just for contrast, here is a link to a mission that DOES run reliably for me under AH V2.31.3 on my Windows XP machine:
http://askmisterwizard.com/FlightSimMovies/AcesHigh/Ah2Missions/PacMix01/Ah2PacMixMissionFullPage.htm(Last link at the bottom of the page takes you to the version for AH 2.31.3)
I'm banging my head against the wall trying to determine what's different between the missions that do work versus those that don't. So far, I've eliminated these factors:
1- mission complexity: This large, complex mission works, while my simple "PeabodySimple" one fails
2- Terrains: Missions that fail on the newest ndisles terrain also fail on a very old ndisles terrain, at the same point
3- Number of flights assigned to routes: I trimmed my "Rabaul431018" mission down from many flights to the bare minimum with no change.
4- Media files: My "Peabody Simple" mission fails the same way whether fully loaded with briefing audio, briefing maps, and battle radio banter or not.
5- Graphic detail: I've tried my "Rabaul431018" mission with graphic detail at max and at min. Crashes the same way under AH2.31.3 in both cases.
6- Windows XP versus Windows 7. Credible reports from jimson indicate failure of my Rabaul431018 mission under Win7, and the same mission fails for me under Windows XP.
7- "Impossible Segments": "PacMix01" has segments with errors that are detected by the V2.31.3 compiler, but if I have it compiled anyway, it runs OK. "PeabodySimple" has no such errors, but it crashes.
8- Planeset: All of the planes in "PeabodySimple" (which crashes) are also used in "PacMix01" (which does not crash).
9- Converted Terrains: My "Rabaul431018" mission runs in my "NGuinea4" terrain, which was converted from AH1. My "PeabodySimple" mission runs in the "ndisles" terrain, which does NOT display the "Using Converted Terrain" message. Both missions crash under V2.31.3.
10- Warp Segments: I don't have any warp segments in my "PeabodySimple" mission (which crashes). I don't have warp segments in "PacMix01" either, but it does NOT crash. My "Rabaul431018 mission DOES have a warp segment, and it DOES crash.
That is all!