InsulinShock

Hello, I think I can add some information into this issue. I have been working on a mod in a clean install, no mods added. The bug appears to be in the kerbal API related to the staging. The error message: "[Error]: System.NullReferenceException: Object reference not set to an instance of an object at Staging.ActivateNextStage () [0x00000] in <filename unknown>:0" is thrown by the call "Staging.ActivateNextStage();". I tried alternative ways to trigger a stage using: "FlightGlobals.ActiveVessel.ActionGroups.ToggleGroup(KSPActionGroup.Stage);" and "FlightGlobals.ActiveVessel.ActionGroups.SetGroup(KSPActionGroup.Stage, true);" which did not throw errors but also did not trigger a stage. The same calls to the lights and landinggear KSPActionGroups successfully toggled the lights and the landing gear. Also, deconstructing the parts to stage ownership: Debug.Log("Current stage:" + FlightGlobals.ActiveVessel.currentStage); foreach (Part part in FlightGlobals.ActiveVessel.parts) { Debug.Log("PartName: " + part.partInfo.title + " - Stage: " + part.inverseStage.ToString()); } When called on the stock ship "Kerbal 1", the current stage at the start of flight is 7, and the nose-cones of the solid boosters belong to stage 6. However, the stage sequence only lists stage 5 to 0 on the GUI. I have done my build and run in KSP v1.1.2.1260 in both x86 and 64bit. I tried using the Stock Bug Fix Modules: It was unable to resolve this bug. To the awesome devs at Squad, I hope this information helps. Cheers, InsulinShock

It's not a vanilla install of Matlab... the Instrument Control Toolbox is also needed.

Hi. The interface is just an internal port. Any program that can access tcpip ports, which should include Octave, Python, C++, C#, Java, Matlab, LabView, should be able to interface with the program. When it was written, I just chose to use Matlab because I use it all the time.