Thank you for the links, yes I had everything already installed
java.lang.NoClassDefFoundError: com/maddox/il2/objects/air/Su_15TM$1
[1:54:43 AM] at com.maddox.il2.objects.air.Su_15TM.doEjectCatapult(Su_15TM.java:305)
[1:54:43 AM] at com.maddox.il2.objects.air.Su_X.bailout(Su_X.java:1174)
[1:54:43 AM] at com.maddox.il2.objects.air.Su_X.update(Su_X.java:976)
[1:54:43 AM] at com.maddox.il2.objects.air.Su_15TM.update(Su_15TM.java:139)
[1:54:43 AM] at com.maddox.il2.fm.FlightModelMain.update(FlightModelMain.java:1057)
[1:54:43 AM] at com.maddox.il2.fm.FlightModel.FMupdate(FlightModel.java:558)
[1:54:43 AM] at com.maddox.il2.fm.FlightModel.update(FlightModel.java:546)
[1:54:43 AM] at com.maddox.il2.fm.AIFlightModel.update(AIFlightModel.java:46)
[1:54:43 AM] at com.maddox.il2.ai.air.Maneuver.update(Maneuver.java:835)
[1:54:43 AM] at com.maddox.il2.ai.air.Pilot.update(Pilot.java:195)
[1:54:43 AM] at com.maddox.il2.fm.FlightModelMain.tick(FlightModelMain.java:1084)
[1:54:43 AM] at com.maddox.il2.engine.Interpolators.tick(Interpolators.java:222)
[1:54:43 AM] at com.maddox.il2.engine.Actor.interpolateTick(Actor.java:434)
[1:54:43 AM] at com.maddox.il2.engine.InterpolateAdapter.msgTimeOut(InterpolateAdapter.java:174)
[1:54:43 AM] at com.maddox.rts.MsgTimeOut.invokeListener(MsgTimeOut.java:73)
[1:54:43 AM] at com.maddox.rts.Message._send(Message.java:1217)
[1:54:43 AM] at com.maddox.rts.Message.sendToObject(Message.java:1191)
[1:54:43 AM] at com.maddox.rts.Message.sendTo(Message.java:1134)
[1:54:43 AM] at com.maddox.rts.Message.trySend(Message.java:1115)
[1:54:43 AM] at com.maddox.rts.Time.loopMessages(Time.java:252)
Classcheck shows shared class files with MiG-21_Third_Generation, which has folder directly above the Su-15, and the L-159, which I have far below. The "Su_X.bailout" CTD occurs with all 3 variants and only seems to happen with a missile hit (maybe gun too) where the AI pilot bails, there is no CTD if I eject on the runway. I have a lot of jets installed and fairly carefully ordered, with all the newest higher up (the F-18 highest). I also have no CTDs or any other major issues with any other jets, including Bison's new MiG-25. I will do some more testing in the meantime to see it is an AI only issue, the log seems to suggest so.. Thanks for your time!