KSP Version: v0.24.2 Windows 64bit What Happens: I get stuck in the Research and Development Screen, meaning I cannot exit to the KSC. When I hit the exit-button the menu bar on the bottom appears and I can load a save (but not save the game or leave the game) but the Research and Development Screen stays. The same thing happens in the Mission Control screen. Also when I am at the KSC I cannot enter the VAB, nothing happens when I click on it. I can enter it through the Launchpad though. Mods / Add-Ons: A lot but the problem first appeared after installing TAC, US_Core, US_KAS, US_TAC, and Dmagic Orbital Science. These are all in the recent versions. Here are two pictures of my Gamedata-folder. Steps to Replicate: I start the game, load my save, go to the R&D building, research something, hit the exit button and said problem appears. I saw some similar problems here in the forum, but it was not exactly the same. Can please anybody help. Log: https://www.dropbox.com/s/aj0g7t8zdehxwlm/output_log_140914.zip?dl=0 Edit: De-installing DMagic Orbital Science solved the Problem. After Installing the new Version of the mod, no error occured ... yet