I recently ran into a bug where the right click menu to attach cable to JS-1 sockets won't show up in certain cases. The issue persists throughout program restarts and detaching/reattaching socket. Here are some scenarios to reproduce:

scenario 1:
I accidentally pressed left mouse button instead of X while installing JS1 and it fell ~1m to the ground. When I picked up it installed fine on the the part, but couldn't attach cable any more.

scenario 2:
Winch sank through the ground and exploded due to Kraken-related issues. The socket it was connected to was salvaged but could no longer be used.

I looked in the save game file and couldn't find any difference there between working and non-working sockets. Right clicking works well in any other case.

We need reproducible cases. Can you make two save files on the stock parts only?

Scenario #1 relates to a part destruction, and this case is tricky - there can be edge cases not covered in the code. KAS is designed so that it tracks the parts state, so if there is a mismatch, then there will be errors and warnings in the logs. That said, I need at least the logs. Even better, logs + a save file.

Scenario #2 seems very straightforward. There should be no difference between attaching the part right out of the inventory, or by picking it up from the ground. Without extra data I have no idea what could get wrong there. Save file + logs is the only way to shed the light on the problem.

Thank you for the quick response. I'll try to send you the files by tomorrow.

I made the mistake (or is it) to upgrade to KSP 1.9 and I have been unable to reproduce the bug since. I'll get back to you if it happens again, sorry for wasting your time.

It seems this issue is not reproducing. Feel free to re-open if it shows up again.