Space plane spawns above runway

[Myrkur]

Having issues launching a space plane after launching its teleporting 1km up above the runway just for it to fall down and crash

opening the alt f12 console while loading gives the error (Ground contact! - error moving vessel up 996.814m)

mods installed are OPT and kOS on the latest version of KSP 1.4.1

Video I took earlier http://plays.tv/video/5ab2b39148fecdebd1/ground-contact-error-

[Myrkur]

After about an hour of messing around turns out it was the docking port on the space craft being placed below the landing gear that caused the contact error

[RockyButtclench]

did you manage to fix it tho? having the same issue with opt, im using the small J docking port and no matter what i do i cant stop it teleporting...

Edited May 15, 2018 by RockyButtclench

[RockyButtclench]

also its not anything to do with the landing gear or docking ports... it still does it to me when i dont have either, from my testing its the deployment bay that is causing it.

[Kauske]

Same issue here, it's definitely the deployment bay that's doing it for me too. Did anyone ever find a fix?

[winnermah]

same issue here, can't launch anything that has OPT plane parts... Must be mod related but i doubt that it will get fixed since the mod is probably abandoned

[Kilo60]

Same damn issue?

 

Anyone found a fix>>>???

[Tate_Nurner]

Hey, I think I found the problem. I did some pretty extensive testing to boot. The "OTP J inline docking port" is the culprit. Something with it's extending mechanism triggers the game to think your vessel is penetrating the ground at spawn and proceeds to move spawn location 1km above. I believe this is so the game will not crash when physics are activated.

[Stone Blue]

Yes, this has all been talked about extensively throughout the OPT threads.
Known issue with, yes, several of the parts with deployable doors/ramps/docking ports.
A temporary fix, is to install the World Stabilizer  mod till OPT gets fixed.