I've read several pages backwards and found no mentions on my bug: when I add any decouplers in VAB either in SPH, they behave very odd: they create effects as if they decouple every second. There's also blank icon on the staging order thing in the right bottom corner. Well, and the most important and bad thing: stack decouplers (I haven't checked this on radial ones) literally fall through the ship as if I forgot to connect them somehow to lower stage. Ah, and if I go EVA, poor Jeb jumps out of his landing can and lies on the ground with emotionless face, and my camera remains centered on the spaceship... This may be a combination of KSP plugins, but when I remove TweakableEveything, everything becomes OK.. I'm running Windows x64, 0.90 KSP x32, TweakableEveything 1.6 and bunch of other mods. I hope this will help, your mod is great! [EDIT1]: Well, I've read several pages, but I forgot about the last one:) Yes, downgrading to version 1.5 works, but it isn't what we want, right? Well, it says this: [Exception]: MissingMethodException: Method not found: 'ToadicusTools.Tools.InitializeTweakable'. [Log]: stackDecoupler added to ship - part count: 2 [Log]: stage count is: 1 Wait a minute, I'll figure out how to attach files. [EDIT2]: I haven't figured out how to upload files here, so there will be two links: output_log.txt for 1.6 version output_log.txt for 1.5 version <-- working fine! I hope this will help.