Only Certain Landers Cause Bases to Explode During Landing

[archiebald]

I know that bases have always been finicky but this has been an ongoing annoying problem for a career I started back in 1.7, carried through 1.8 and 1.9 and now in 1.12.2

I have bases on Minmus and Mun that produce ore and fuel.  I use lander tankers to ferry it up to an orbiting refuelling station for ships coming through.  I have three various lander designs on Mun and two on Minmus.  Of these five, just two cause me problems.

During landing, as I get into physics range of 2.3km these two landers cause various parts of the the base below to randomly jump and explode.  I soon learned to quicksave before getting to this point so I'll rerun the landing attempt and about 1 time in 4, I'll get get it down with no issues.

The other three landers never caused any problems at all, 100% landing rate with no oopsies.

So, obviously there is something about these particular landers that affects the physics of other vessels.  The only obvious difference is the part count being considerably higher on the troublesome landers.  I could replace them but I don't know if that will solve anything and I really don't want to scrap them as they are also designed as skycranes for base upgrades.

I run plenty of mods including parts that are used in both bases and landers so I cannot simply remove mods which I know makes it is difficult to know where to start looking.

I know this would be a difficult thing to solve but I would appreciate if anyone can at least point me in a direction to start researching before I go off in the wrong direction.

Cheers.

[Caerfinon]

I have the same issue with submarines. The issue I have found is that when vessels approach within 2.5 KM for some reason the game interprets the craft at rest as "on rails" and then determines via some weird physics that it should blow up. Happens mostly with modded parts, and very rarely with all stock parts. Like you I've found no rhyme or reason to it.