I get a crash when I enter the sphere of influence of the Mun while I have the Mun set as a target, or if I set the Mun as a target after I have entered its SOI; KSP 0.20.2 Here are some Player.log excerpts for each of these scenarios: Setting Moon as target after entering SOI: Unpacking C-Mun Return 01 (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) [Orbit Targeter]: Target is Mun (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) [Orbit Targeter]: Target is Minmus (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Packing C-Mun Return 01 for orbit (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) recalculating orbit for Mark1-2Pod (C-Mun Return 01): Kerbin rPos: [-7135109.1256871, 2087.984416583, -6383531.31624113] rVel: [-147.21225467114, -466.032435190105, 1.15483573205833] |488.732045419725| (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) recalculated orbit for Mark1-2Pod (C-Mun Return 01): the Mun rPos: [1802451.10748259, 1623966.23778703, 2087.98441010504] rVel: [-509.296508647252, 1.15483573205833, -62.0584347611639] |513.064826986662| (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) setting new dominant body: the Mun FlightGlobals.mainBody: Kerbin (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Unpacking C-Mun Return 01 (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) [Orbit Targeter]: Target is Mun (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) [Orbit Targeter]: Target is null (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) NullReferenceException: Object reference not set to an instance of an object at FlightGlobals.FixedUpdate () [0x00000] in <filename unknown>:0 (Filename: Line: -1) My steps: * Load saved game * Set Mun as target * Set Minmus as target. * Time-warp. * Enter Mun SOI. * Set Mun as target * Crash. ---- Setting Moon as target then entering SOI. Unpacking C-Mun Return 01 (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Event Type Ignored: EnterNotify [Orbit Targeter]: Target is Mun (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Packing C-Mun Return 01 for orbit (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Event Type Ignored: EnterNotify Event Type Ignored: EnterNotify Unpacking C-Mun Return 01 (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Packing C-Mun Return 01 for orbit (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Unpacking C-Mun Return 01 (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) recalculating orbit for Mark1-2Pod (C-Mun Return 01): Kerbin rPos: [-7133890.08154154, -6379738.36885548, 2078.24141512066] rVel: [-147.713287353516, -466.501922607422, 1.15504789352417] |489.330760521796| (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) recalculated orbit for Mark1-2Pod (C-Mun Return 01): the Mun rPos: [1809948.1414573, 1620746.48150359, 2078.24141512066] rVel: [-509.398215495259, 1.15504789352417, -62.1703597099622] |513.179334844902| (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) setting new dominant body: the Mun FlightGlobals.mainBody: Kerbin (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) Vessel Mark1-2Pod (C-Mun Return 01) velocity resumed. Reference body: Mun vel: [-509.398215495259, 1.15504789352417, -62.1703597099622] (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) [Orbit Targeter]: Target is null (Filename: /BuildAgent/work/7535de4ca26c26ac/Runtime/ExportGenerated/LinuxStandalonePlayer/UnityEngineDebug.cpp Line: 54) NullReferenceException: Object reference not set to an instance of an object at FlightGlobals.FixedUpdate () [0x00000] in <filename unknown>:0 (Filename: Line: -1) My steps: * Load saved game * Set Mun as target * Time-warp. * Enter Mun SOI. * Crash.