Now guys, there is no need to get so excited about problems with this mod install... However, if most people are able to install the mod without any problem, then, those of you that do have some problems are, sorry to say that, having issues with one of the two:
1) system configuration
2) computer knowledge
Now, there isn't much we can actually do about any of that, but some guidelines can be given (although they are in no way a guarantee of successful installation):
1) always use 7zip to extract files
2) if using Firefox Web Browser > in no way (and I really mean it) do anything else (browsing the net, installations, etc) while the files are downloading... even if you do use other Web Browswers, restrain yourself for the time the files are downloading
3) be sure to have right authorities on your system; Windows7 & Vista could have UAC problem (here's how you disable it)
4) always use Run as Administrator button (right click on the setup.exe > Run as Administrator)
5) do not do other activities during installation
6) do not run any maintenance software during installation
now, this is all widely known know-how in modding community. these few simple rules apply to almost all games (and all engines of TW I am familiar with). following them could do a great deal for you to ensure good and playable mod.
there is always a problem of having a lack of computer knowledge. in that case, go to the Installation & Launcher Thread in the forums main page and follow the instructions to the letter. Read them carefully, we have invested a lot of time to make them understandable to most of people. If you have a problem understanding english, ask someone to help you out...