Do you have scripthookv, dinput8.dll, OpenIV.asi, and scripthookvdotnet.dll installed in your GTA V directory? This is the only way to get mods working. If it crashes when trying to load in, download a gameconfig for your game that allows limitless vehicles addons. Also don't double post a topic on the same issue as it's forbidden to do so.
@ReNNie It wasn't really anything special, I just "became allies with my enemy". I didn't want to change my Post FX to Ultra because I would have to compromise some of my settings but I had to because uninstalling NVE wasn't working. But now it works fine and looks FANTASTIC. I didn't know how much Post FX could change how the game looks.
@Xmodz Try another gameconfig as not all work the same. Also it can be the new mod itself that you are trying to add thats causing the issue. Try adding a different one to see if you have different results.
@MagmaPlaysGTA Hi, you will need .dds plugin for Photoshop or GIMP (google it), because in GTA 5 there are .dds textures. Overall its very easy, just use OpenIV and find some .ydd (texture dictionary), open it, extract texture you wanna edit.. make your magic in photoshop.. and save it as DXT1 or DXT5 (depends on default texture) with mipmaps . DXT1 is without alpha channel and DXT5 is with it. Also is good to know that .dds is originally compressed texture, so you will notice some artifacts. You can save it as A8R8G8B8 (without artifacts) which is not compressed, but texture size it too much.. i dont recommend that. Anyway here https://www.buckarooshangar.com/flightgear/tut_dds.html is good article about .dds textures.. i recommend that for beginners..
@ItsJustCurtis Not trying to hijack the thread but I too will randomly have this issue still with all prerequisites installed. You mentioned that it depends on the machine you have. Well I have Ryzen 3700X, 16GB 3600Mhz RAM, and 3070 GPU. Its not the most powerful rig but it should well enough no?
At this time I have about 200 replaced cars with another 100 or so add on cars. No graphic or texture mods other than ENB. Note that all of my replaced cars are around 10MB or under in size. I usually don't have any ingame graphic loading issues either so am wonder if I just am reaching the game engine's limit?