Had that crash during a WIP mission:
Error: ai_find_path tring to find a path (16) that doesn't exist, on ship BI Fellitanaras
File:J:\src\cvs\fs2_open_3_6_9.final\code\ai\AiCode.cpp
Line: 3873
[This filename points to the location of a file on the computer that built this executable]
Call stack:
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fs2_open_3_6_9-INF.exe 00608dd1()
fs2_open_3_6_9-INF.exe 006096e5()
fs2_open_3_6_9-INF.exe 004be6e0()
fs2_open_3_6_9-INF.exe 004c0754()
fs2_open_3_6_9-INF.exe 004c0921()
fs2_open_3_6_9-INF.exe 0049215c()
fs2_open_3_6_9-INF.exe 004284b3()
fs2_open_3_6_9-INF.exe 0109fb10()
fs2_open_3_6_9-INF.exe 0109fd2c()
fs2_open_3_6_9-INF.exe 0109ff48()
fs2_open_3_6_9-INF.exe 010a0164()
fs2_open_3_6_9-INF.exe 010a059c()
fs2_open_3_6_9-INF.exe 010a07b8()
fs2_open_3_6_9-INF.exe 010a09d4()
fs2_open_3_6_9-INF.exe 010a1028()
------------------------------------------------------------------
The BI Fellitanaras is a Tashkat. I think it has something to do with the beam cannons. Take a look at it. Turret 6 and 7 contain the beams but they are placed in the MIDDLE of the ship, instead in the two cannons at the wings.
I removed the beams from the subsystems now, I hope that works. I need that ship.