NEVER RUN FOMM AS ADMINISTRATOR. NEVER EVER. This is to protect you from MY bugs. If you EVER run it as administrator, you must then: 1. ALWAYS run it as administrator. A fucking terrible idea. or 2. Fix the file permissions (or delete) for everything in the FOMM mod tracking dir, "c:\games\falloutnv" by default.   32bit vs anycpu, what gives?! The 32bit only version is no longer maintained. The anycpu version will run as a 32bit program on 32bit windows, and a 64bit program on 64bi