lonememe

Ah, yup that makes sense. Sorry! Total newb who apparently got the pre-release unexpectedly! I'll wait until 1.3 then. Cheers!

That has to be one of the nitpickiest and grumpiest attempt at support I've seen. Jeeeesus. First things first, I was attempting to install MechJeb long before I had Chatterer installed, and this was happening. MechJeb in the GameData folder is the variable here. Here's a screenshot of the GameData directory in the correct configuration (confirmed for me by the KSP reddit) that results in KSP crashing: If that isn't the correct directory configuration, then please explain your second paragraph a bit more clearly using a simple standard directory mapping like KSP>GameData>MechJeb>Plugins>etc. Thanks.

KSP: 1.2.9.1727 64bit Problem: Every time I install MechJeb the game will crash at launch during the "Loading Asset Definitions" step in the progress bar. It produces a debugging folder which is attached below. I am placing the MechJeb folder into the GameData directory to install it. Mods installed: Attempting to install MechJeb 2-2.6.0.0 Log: https://drive.google.com/drive/folders/0BxToO22wipRTQWdmVk9GSlNZWEk?usp=sharing