Installation:
1. First you have to download the base pack (
click me!).
2. Start OpenIV and click on Package Installer at the top (the three colored bars). If you start it for the first time, first define your GTA installation path.
3. Select the "DLC.BASIS.PACK.oiv" you just downloaded. and click "Install".
4. Select "Game Folder" with the green V and click "Install" again. This will take a moment.
5. As soon as it says "Installation succeeded", you're done with the preparations! Now you could use any of the base pack addons.
Download 1:
DLC Basis Pack
Download 2:
LA ROADS REVO