Bug #27097

Adding the first fuel tank make it impossible to select a part and to save or quit the rocket editor in a new career mode

Added by sylario 4 months ago. Updated 3 months ago.

Need More Info
Target version:
Start date:
% Done:


Breaking Ground, Core Game, Making History
English (US)
Mod Related:
Arrow u r green
Arrow d r red


I have repeated this bug with mods, and without mods, before and after checking the files and redownloading the game.
build id = 03045 windows 10 x64.

- Career mode
- Earn enough science to unlock the 2 first tech tree upgrades
- Go to VAB
- Put a control module with the separator thin ring
- Add the only fuel tank available

The fuel tank disseapear. It is now impossible to add any part, or to select existing parts. When trying to quit the VAB, the 3 choice appear, but the buttons do nothing, only way to quit the game is alt+f4.

In sandbox mode, with the same part, there is no bug.

Full log :

Here is the relevant part of the logs :

[UIMasterController]: ShowUI
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
fuelTankSmallFlat added to ship - part count: 2
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
Uploading Crash Report
at (wrapper managed-to-native) UnityEngine.Object.GetName(UnityEngine.Object)
at UnityEngine.Object.get_name () [0x00001] in <5aeafee3fea24f37abd1315553f2cfa6>:0
at PreFlightTests.StationHubAttachments.TestCondition () [0x0003f] in <f8bc9e2b903e48a5b248ab0083c07c62>:0
at PreFlightTests.DesignConcernBase.Test () [0x00000] in <f8bc9e2b903e48a5b248ab0083c07c62>:0
at KSP.UI.Screens.EngineersReport+TestWrapper.RunTest () [0x00006] in <f8bc9e2b903e48a5b248ab0083c07c62>:0
at KSP.UI.Screens.EngineersReport+<RunTests>d__49.MoveNext () [0x000bb] in <f8bc9e2b903e48a5b248ab0083c07c62>:0
at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00027] in <5aeafee3fea24f37abd1315553f2cfa6>:0
(Filename: <5aeafee3fea24f37abd1315553f2cfa6> Line: 0)


#1 Updated by sylario 4 months ago

Step by step clarification :

- New Career mode
- Do a flight with 3 goo container to unlock at least 10 science
- The two unlocked research are Engineering 101 and Basic Rocketry
- Create a new rocket with a MK1 command pod and a TD-12 decoupler
- Add a FL-T100 tank (only available)

When you add the tank, the tank vanish, and new parts cannot be connected to the main body of the rocket. Attempt to add new part result in the new part appearing transparent.

Exiting is impossible "Save & continue" and "don't save" do not work.

#2 Updated by victorr 3 months ago

  • Assignee set to victorr

#4 Updated by just_jim 3 months ago

  • Status changed from New to Need More Info

I have not been able to repro this. Can you attach the save for the game in question, please?

#5 Updated by sylario 3 months ago

No, I reinstalled the game in steam (and deleted every trace of the game in Users folders) and my logs are from after the reinstall

#6 Updated by [email protected] 3 months ago

I made excatly same steps. Didn't happen for me.

#7 Updated by ReverseVolcanos 3 months ago

just_jim wrote:

I have not been able to repro this. Can you attach the save for the game in question, please?

I've had the same issues with the decoupler and a save where it reliably recreate this. Fresh install today, no mods. New career, unlocks in Engineering 101 and Basic Rocketry, also survivability.

Attaching a FL-T100 and FL-T200 to the bottom of the TD-12 causes the fuel tanks to disappear and break the VAB. Only way of exiting besides alt+f4 has been selecting "New" and "Do Not Save" which clears the vehical and you can leave the building.

Let me know which files to send over for you to look at

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