Docking port stuck, unable to undock

[klingolf]

I have a station in orbit around Minmus, and right now there are 4 ships docked at it. Now, when I click the undock button, nothing happens, except the button disapears. The log says:

[WRN 22:52:54.850] [DockingNode]: other node is null!
[WRN 22:52:54.856] [DockingNode]: other node is null!
[WRN 22:52:54.858] [DockingNode]: other node is null!
[WRN 22:52:54.861] [DockingNode]: other node is null!
[WRN 22:52:54.862] [DockingNode]: other node is null!
[WRN 22:52:54.862] [DockingNode]: other node is null!
[WRN 22:52:54.985] [PartJoint]: None of the provided nodes was valid!
[WRN 22:52:54.988] [PartJoint]: None of the provided nodes was valid!
[WRN 22:52:54.992] [PartJoint]: None of the provided nodes was valid!
[WRN 22:52:54.998] [PartJoint]: None of the provided nodes was valid!

Has anyone any suggestions how to unstuck my ports?

I am running KSP 64-bit on Debian8 64-bit, sometimes with steam, sometimes not.

[v8Dave]

Have you tried both the ship and station sides of a docking adapter ?

[klingolf]

Yes. Interestingly enough, one of the ships is still able to undock. Still, 3 ports simply do not react.

[KombatWombat]

I've suddenly run into the same problem (on Windows) and am about to attempt editing my save file to fix it, based on tutorial show here (by Claw). Will update with results shortly.

[h=1]Thread: FIX: DOck / Undocking Bug[/h][h=1][/h]Update: I tried this but only succeeded in turning the decouple button back on. I haven't been able to figure out the part number required to determine where the docking port is attached (see the above link for a description of how this works). Now I get a nullref exception spamming in the debug. Not sure if it was there before though. I'll probably keep trying.

If anyone knows how to find part numbers (I heard KER might be able to do this?) please let me know.

P.S. Stock Plus fixes some bugs and allows you to rename your docking ports, which is really helpful when you need to find them in the save file! Phoenix Industries: Stock Bug Fix Modules & StockPlus (KSP v1.0.4 Compatible)

Edited October 4, 2015 by KombatWombat