lysergicknight

This works, thanks for the tip. I had tried this at some point but apparently the files were overwritten by something else.

Well, upon installing Stockalike I can see this, new of course: [WRN 20:33:49.499] 1 warning related to GameData/RealFuels-Stockalike/fix-part-categories.cfg [WRN 20:33:49.499] 2 warnings related to GameData/RealFuels-Stockalike/Jet_modularEngines.cfg [WRN 20:33:49.499] 1 warning related to GameData/RealPlume/RealPlume-RFStockalike/AJE.cfg I don't know what that entails, but from reading the AJE Extended thread, the mod-author (Citizen) states that configs such as these aren't necessary since AJE Extended configures the engines for Real Fuels itself. Last page if you're curious. Oh and, it didn't work with Stockalike installed either, same problem. I'm happy to assist with anything else you have in mind to test this issue, but I'm fairly certain that this is related to AJE and not a simple mod-conflict.

This happens with AJE installed alone as well, just tried it on a clean save (screenshot). My full log file, here.

Checking back to see if this got a reply, but I decided to see if SolverEngines needed an update or something and found that AJE bundles a 'EngineDatabase.cfg' file which has an incorrect version number for the Solver dll. I'm going to try changing that to match the current version (3.7.5, instead of 3.3 which is what the config defines) to see if it helps anything. - Update: This isn't the problem, no effect by changing the version number.

I'm also having this issue and thought the culprit was my outdated Real Fuels install, but this is spammed in my log when trying to use any turbofan/turbojet: [EXC 18:40:51.430] ArithmeticException: Function does not accept floating point Not-a-Number values. System.Math.Sign (System.Double value) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0) AJE.SolverJet.CalculatePerformance (System.Double airRatio, System.Double commandedThrottle, System.Double flowMult, System.Double ispMult) (at <0ae9f534f9aa4fa094046d18ae4b2ece>:0) SolverEngines.ModuleEnginesSolver.UpdateSolver (SolverEngines.EngineThermodynamics ambientTherm, System.Double altitude, Vector3d vel, System.Double mach, System.Boolean ignited, System.Boolean oxygen, System.Boolean underwater) (at <74850d43f7ff48019de0b8ae9698d99b>:0) SolverEngines.ModuleEnginesSolver.FixedUpdate () (at <74850d43f7ff48019de0b8ae9698d99b>:0) UnityEngine.DebugLogHandler:LogException(Exception, Object) ModuleManager.UnityLogHandle.InterceptLogHandler:LogException(Exception, Object) UnityEngine.Debug:CallOverridenDebugHandler(Exception, Object) ~ I'm also using AJE Extended configs, but absolutely none of them work; game version 1.9.1.