Hello I am having problems loading in the addon police vehicles I had added before the update. Before the latest update of scripthook V I had no issues spawning them in but after updating LPSDFR, Scripthook V, and RagePlugin entirely I cannot seem to spawn any in when I try... what am I doing wrong?

First, addon vehicles have absolutely nothing to do with RagePluginHook or ScripthookV, so your statement "Before the latest update of scripthookv" is very incorrect, because it has nothing to do with it. This issue is directly from GTA V 2060 update. 

 

Is it addons with their own DLC? 

Is it addons for patchday22-23ng or even replacement vehicles? 

Where did you install them? 

 

Perhaps some references, links to the vehicles you are referring to that isn't working. 

If it's an individual car, I have a pinned topic that features a tutorial on installing addon cars, give that a read over and verify you're doing it correctly.

 

If it's a dlcpack, make sure you correctly added the dlcpack name in dlclist.xml.

I am pretty sure I did it correctly because it worked before everything needed updating and I used the Albo video for adding addon vehicles

Its most likely due to the new update. Go into update, update.rpf, common, data, dlclist.xml and you will most likely be missing the lines to your DLC packs so add this <Item>dlcpacks:\NAMEOFDLCPACK\</Item> and put whatever the folder name is for that DLC.