Pink Screen on launch

On launch, after loading up, this is what I get.

I played this several months ago no problem, and decided to get back into it with some friends.

I redownloaded and installed via steam.

I’ve looked up the problem but nothing is quite like this one. People show specific things ingame being this color, not the entire client.

I’ve messed with config since then to see if I can get different result at least but to no avail.

4 days later and 72 views and not a single reply?

No one has ANY idea whatsoever not even a hint of what is wrong?

This is happened to no one else ever?