Jaxhofo

Pretty much any vehicle too close to the ground suffers this problem for me. I've tested it on the stock craft, this what happens to the Orbiter 1A: Here's what happens to a mining rig I made, with the smelter as the root part: For both, the root parts explode right after I clicked build, and then the debris just stays there with no physics, giving NaN errors. If I switch from the space center and back, the debris then disappears. Interestingly, as long as the root part is elevated, everything works out fine. Here's the stock Z-MAP launcher: And this is just a cubic strut as the root, with beams to get it to spawn higher: When the root part explodes, it gives a ground contact error with a negative number. But for the ones that do work, they give a ground contact error with 0.000m.

I'm not sure if it's just me, but I've been experiencing the explosion bug whenever I attempt to build something with its root part lower than about 12m from the ground. I think it's because KSP thinks it's below ground when it spawns. I've come up with a workaround, by adding SpawnHeightOffset = 12 after debug = false in the .cfg, like so: Hopefully this might also help with other users' issues too. A word of warning, this will also cause the stuff you build to spawn high up in the air, so use landing gear or toggle gravity if needed.