So   I don't know if this has to do with the gta v update but it started as a crash, but i realized that the update affected the vehicle meta files, I suddenly had demmed lights and had to re install radiance, aside from that though i check to see if my mods were deleted but everything was there, although when i go on the game i have the old pistols the default ones, the only thing that didn't change is the cars and the sirens, aside from that everything is the same. I reinstalled everything (updated i should say) schripthook vdotnet and the regular schripthook so I don't know honestly, Gta loves to surprise us with those update i guess

Is it your scripts that aren't working, modded vehicles, or your plugins?

Just make sure that everything is up to date, and if needed you can reinstall everything from the start; usually that happens when you're modding I've had to do it several times.

I rather get shot that reinstall alll these mods again ;')