Attaching Clamp-o-tron to Mun Station makes everything explode

[TheStum]

Hi everyone.
 

Using KIS, I'm trying to add a clamp-o-tron docking port to an already existing station. When attaching, the game freezes a bit as usual, but when freezing ends, everything explodes near the attachment. I assume this has something to do with physics flipping out.
Strangely, it doesn't explode when I remove then attach the nearby clamp-o-tron Sr, or when attaching other parts (except for a telescopic clamp-o-tron docking module from SSPEr available from the same KIS container, that makes everything explode as well). In this case, I'm attaching the clamp-o-tron on a stock radial attachment point, but it still explodes when attached directly on the station radially.

Here's a quick capture showing what happens precisely

Is that preventable ?

KSP version 1.9.1

Thanks a lot !

[jimmymcgoochie]

If you hit F3 immediately after it explodes, it will tell you exactly what happened.