As I stated I did a full clean install, clearing the caches via the installer. I unfortunately didnt have a more recent version other then the 4.3.5_97 to test with. I have been traveling a few days. I was merely stating what seemed to cause it and resolved it for me. I will try to manually clear everything out and try .12 again. I am not changing drivers or turning off my av or running it in any different mode. If running it as is with 4.3.5_97 works then the same should apply for 4.3.12. Not trying to be an arse about this, just stating the facts as I know them.
Edit*****
I manually deleted everything under res_mods , Deleted all folders named Aslains_DLC_cache...... , ran the game to make sure everything was fine, and it was. I ran the 4.3.12_97 installer with clear cache and fresh install enabled and my vehicles were not present again. I made no manual changes, ran the 4.3.5_97 installer with clear cache and fresh install enabled and my vehicles are back again.
I dont see how to upload my logs.zip file here or I would attch them.