Everytime I try to install a fomod (edit: for Fallout New Vegas) I get this error: "The type initializer for 'SevenZip.SevenZipLibraryManager' threw an exception." I tried with MCM and Fallout Character Overhaul, specifically. But I have been trying to fix this for 2 days (since I started using mod organizer). What I tried: enabling/disabling internal fomod installer in Mod Organizer plugin settings manually unpacking archives and repacking them as a different type ( .7zip to .zip, .zip to .rar etc.) manually unpacking the .fomod - this allowed me to install MCM, but it was not running properly (couldn't even toggle the settings in the menus) using an older version of Mod Organizer, as well as installing Mod Organizer manually (yes, somewhere else than in C:/Program Files) This is really annoying me now, more because I can't fix it than anything else. Of course, the fact that I can't install some of the awesome fomods out there still sucks. I would greatly appreciate it if the community could help me figure this out.