Trouble installing GTA 5 OIV packages

[UnexpectedSon 0]

Hello, can anyone help with this query? I can't seem to find anything related to this online, forgive me if it's been asked before.

 

I get a Fatal error, install failed message using the OIV files to install Natural Vision (and other OIVs error if the game files haven't yet been copied to mods):

[24/07/2018 12:05:16] [10136] INFO  -> Add file into archive
                                    {
                                        Source: "content/mod/carcols/dlc.rpf"
                                        Destination: "mods\update\x64\dlcpacks\NVR_carcols\dlc.rpf"
                                        Archive: "W:\SteamLibrary\steamapps\common\Grand Theft Auto V\"
                                    }
[24/07/2018 12:05:18] [10136] ERROR -> Unable to add file "content/mod/carcols/dlc.rpf"
[24/07/2018 12:05:18] [10136] INFO  -> ARCHIVE "GTA V" processed
[24/07/2018 12:05:18] [10136] INFO  -> Installation FAILED

Now I was getting a lot of these errors until I manually copied the games files into the mods folder (isn't OpenIV supposed to do this for me so you don't end up with duplicates of the entire game?). I copied pretty much everything from GTA5 into mods and it got me passed most of the errors except for the one above. 

It feels like I am going about this in the wrong way, moving the files manually to the mods folder for OpenIV to update, and now I am stuck and GTA wont open unless I nuke the mods folder. What am I missing?

 

I am using a steam version of the game just purchased, it's installed on a network drive (actually it's an internal SSD in UnRaid, but windows views it as a network drive). I tried it with a local C Drive install too but the same happened.