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1.Install latest ScriptHookV and ScriptHookVDotNetand its requirements, which are:
IMPORTANT.NET Framework 4.5.2 (or higher)
IMPORTANTVisual C++ Redis- Pack for Visual Studio 2015 (x64)
2.Install latest NativeUI.dll(1.4)
(tip: put the .dll file in GTAscripts)
3.Put ArmsTrading.dll & ArmsTrading.ini & Gang War Locations (folder) into GTA Vscript