Hi folks, I wanted to take a moment and go over my problems with installing Kerbal Engineer and other mods, and what the problem was. I didn't see the same discussion in the previous 10 pages. As indicated in the instructions I copied the files to the GameData directory, without mucking about, into a fresh install of KSP 0.22. I then re-researched the new parts on the career mode and saw them in the science tab. However, when I added the part to a module, nothing showed up. The same occured for MechJeb. The root cause was because I didn't have root, or at least administrator permissions. Specifically, I had installed KSP to the Program Files directory, and answered the nag screen about requiring system administrator permissions to perform such a vile act. I answered the same nag screen when I copied the files to the GameData directory. What I needed to do to get it all working was to right click on my KSP folder and ensure that the Users or at least me, had full control of the directory. Once I did that, everything showed up as expected. Cheers, -Serdic tl;dr - got root?