-Case you already had the mods menu working (Ctrl + N) and after installing a new mod it stop working, maybe you have a outdated scripthookVDotNet, a simple update may solve the issue.
-Don't put scripthookVDotNet.dll file in scripts folder, this will make the plugin fail to load, his place is in gta5.exe folder :)
-Case you believe you have all installed and still can't make it work, check the troubleshooting post clicking here
Requirements to run .net script mods in GTA V PC
1 - ASI Loader + ScripthookV by Alexander blade
2 - ScripthookVDotNet by Crosire
3 - Windows packages for ScripthookVDotNet:
-Microsoft .NET Framework 4.5 (direct link)
-Microsoft .NET Framework 4.5.2 (direct link)
-Visual C++ Redistributable Package for Visual Studio 2013 (x64) (direct link)
-Visual C++ Redistributable for Visual Studio 2015 (x64) (direct link)
*You may need to uninstall newer versions of framework to be able to install 4.5. Remember to reinstall newer versions after install 4.5 (in this specific case).
**In Windows 8 or Windows 10 you may need to install some windows updates that will install the required packages + install the Visual C++ packs.
Tip: You can use this guide as base for any V .NET script setup :)
Option one: OpenIV package installer
Open OpenIV, select GTA V (Windows), in the menu Tools go to Package Installer, then select the .oiv file to open.
You will see a window similar to this one after loading, click in Install :)
Obs.: You also can open the .oiv file with winzip or winrar and extract the files from "content" folder to perform a manual setup.
Case you don't have the .oiv file, you can install the mod extracting the files from the zip.
Basically what you need to do to install my GTA V .Net mods is copy all the files from the zip to your GTA5.exe folder ( files may change :) ):
Run the game as administrator, press Ctrl + N to see if the mod menu appears, wait at least 1 second after game load to try.
Case the mod is not working a good thing to check is the .log files generated by ASI loader, ScripthookV and ScripthookVDotNet, they may contain important info about what is failing.
Check this video that shows the setup of one of my GTA V .net mods.
Contact me via facebook for more advanced help.