This Archiveinvalidation Invalidated thing, do you have to run this everytime you install a new mod or is it a one time activation thing?
Edit: Another noddy question. I downloaded FOOK2 1.2beta, ie. the main file, hotfix, and the 3 data files, i.e. part 1, 2 and 3. The data files have the extension .7z.001, 002, 003. I tried opening the first data file direct with winrar and it says it is corrupt. Am I opening it correctly? Winrar has opened all the other .7z files I've downloaded, its just these ones are out of the ordinary in that they have the 001 etc extension. They appear to not be ascociated with a program in explorer, that's why I tried opening them in winrar manually. Any ideas?