Did you see this thread: http://www.twcenter.net/forums/showthread.php?t=560193 about custom settlements? (Barrow Downs is a custom settlement, an Orc Camp).
However, next time, try the following as comparison: Attack Barrow Downs only with standard Eriador units, this is without the added ZoR units, use only Bree Militia, Woodland Hunter, Lumbermen, Greenway Guards, Heavy Militia (Merchants) etc., which did exist before i added Eriador's ZoR/AoR units. You can also differentiate with characters, ie. Aragorn has its original TATW vanilla bodyguards, Gandalf and Halbarad not.
This is my suggestion ... try that separate, not additionally the geography file removal along the above linked thread, but eventually afterwards, if the standard units deliver the same result.
Edit: 2nd suggestion, test TATW 3.2 vanilla, Eriador, go for Barrow Downs after that mission comes, compare what happens, report.
EDIT
Some apparent facts again (after your recent posts):
- It seems, routing enemies provoke battle crashes (what is actually strange, and perhaps unique for this submod? And apparently a new item since more recent submod versions?).
- We found out that by me added/changed battle-related traits have no impact in that regard (crash or no), as you reported battle-crashes with and without those traits changed contents.
- Along your battle experience, my recent edu unit code changes (with 1.99) for the added/enabled ZoR/AoR units have no affect on battle-crashes, they happen anyway for you (remark: this, although my personal battle testing delivered successful battle experiences after my edu file changes, in direct comparison, but still, it can be a random item).
In general (TATW 3.2 vanilla):
- We have anyway the fact that the RBAI content in TATW has the 50 % option to provoke battle crashes under certain circumstances: the reinforcement bug (but other than that, RBAI is known to be stable).
- The TATW vanilla bugreport thread delivers battle-crash reports, different reasons it seems, ie. some have reported that double-clicking on area while the battle runs caused a crash (iirc., this happened also in my case, rarely, but already with TATW vanilla and my very first submod versions, thus common valid battle problems do exist).
Options (which i see atm. regarding TATW Realism+ submod):
- It is possible, that the by me added/enabled ZoR/AoR units have the affect to provoke campaign battle crashes (if this is so, then those added/enabled ZoR/AoR units must be disabled by me). This, although they don't crash in custom battles (indicates normally, that they have no potential for battle crashes).
- It is possible (rather evident), that TATW battles crash regardless of by me added units, ie. due to the custom settlements content (if this is so, then the above linked advice should be tried, geography file removal, backup those files though).
Under the line:
- Only very few players of this submod report about battle crashes. Experiences in this regard are obviously pretty different, perhaps even different per chosen faction.
- Apparently, the battle crashes started first since i added/enabled the ZoR/AoR units for the campaign.
- We know nothing with certainty
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More reports? Anybody?