Docking/Undocking bugs

[Bazhosh]

Hello all!

I have a space station. Everything worked fine until I rearranged some modules. Now undocking or decouple doesn't work anymore and when I click the buttons, some exceptions are thrown ([Exception]: KeyNotFoundException: The given key was not present in the dictionary.).

I rearranged it with a little helper craft with a docking port and a claw. I guess somehow it has something to do with the claw.

I've already spent some hours trying to fix the problem the way it's done in these threads, but nothing works:

http://forum.kerbalspaceprogram.com/threads/78863-FIX-Dock-Undocking-Bug-in-0-23-5

http://forum.kerbalspaceprogram.com/threads/35777-Can-t-Undock-Bug-How-To-Fix

http://forum.kerbalspaceprogram.com/threads/52801-How-to-fix-the-docking-port-un-dockable-issues-%28Solution%29

http://forum.kerbalspaceprogram.com/threads/124103-PartJoint-None-of-the-provided-nodes-was-valid!

Savegame where undocking still works:

http://tinyurl.com/ooe8bjd

Savegame where all ports stopped working, after I released the claw and docked to a different port:

http://tinyurl.com/nfvhhqg

These two savefiles are almost identical and I've deleted every other craft. I've already compared the two savefiles line by line, but I had no luck fixing the ports.

I've tried to rearrange the modules in a different way and in this savegame some parts even explode after docking:

http://tinyurl.com/qe3jjkc