If you want to install mods in Grand Theft Auto IV, you need to use a tool
like this *GTA IV Magic Patcher*. Without a patch, GTA won't run if files
have been altered, but GTA IV Magic Patcher tricks the game into thinking the
files are normal, allowing you to change whatever you want. All you need to
do to use GTA IV Magic Patcher is unzip the file, backup the existing
filelist.pak in your Rockstar Games directory. Then replace the original file
with the filelist.pak in this archive. You will now be able to install mods
without any problem. In an ideal world, this would be an application that did
this for you automatically, but it doesn't require too much effort. *GTA IV
Magic Patcher is a simple way to start having more fun with GTA IV*Download
*GTA IV Magic Patcher 1.0.2.0* in Softonic