Server materials missing

I thought maybe it was an update (started around 159 - 160) that killed it, so I have been waiting patiently for either someone else with the same problem or garry to fix it, but as it looks like neither are going to happen I’ll ask here.

I am missing a huge majority of my materials on the server. Sprops materials show up and a handfull of phx ones do, but not much else. I did have a greenscreen material I got from the workshop that used to work, which does not anymore since the update/s.
Does anyone have any idea what I could try? I tried downloading a big materials folder from a friend which had all of the missing materials in, but that was a no go.

Just to clear this up, its not map materials, or the materials on props. Its the materials found in the material gun section.