[Solved]Multiple texture and playermodel problems + giant black & red error boxes

[MrTreeGames]

Hi everyone,

Normally I am not a big fan of asking the community for help with such basic 'missing textures' problems. However, I am getting really annoyed, it sometimes severely influences my gameplay and, to my knowledge, I tried everything mentioned in earlier threads.

Here are some issues I am facing, since I redownloaded everything on my external hardrive:

Spoiler :

Some guns (AK47, AR15 and MP5 etc.) are not loading properly. I asked around and heard this was a common problem earlier, but should be fixed now. So I assume this has something to do with my local files. 
https://steamcommunity.com/sharedfiles/f...2091055083

Spoiler :

Next, this is a really weird one. I sometimes see giant red&black error boxes. Sometimes for playermodels or for player postion models, such as when players are pointing a gun at others. But the most annoying one is a prop at the v5p Nexus garage. I don't understand why I don't just see the classical red ERROR letters, but instead this giant black & red box.

Nexus garage
https://steamcommunity.com/sharedfiles/f...2091054379
https://steamuserimages-a.akamaihd.net/u...0D631B61C/

Playermodels, here someone pointing a gun at me. As you can imagine, this is really annoying, because I am basically blind in a FearRP situation. Also happens during raids etc. It seems like I am just missing some weapon textures, but again, why this giant box?
https://steamcommunity.com/sharedfiles/f...2091054205

 

I've tried redownloading all my .gma files, verifying my local files via steam and have resubscribed to the CityRP content for like a million times. Anyone some advice? 

Bonus question:

Spoiler :

 
Who knows the name of this blue tent prop?
https://steamcommunity.com/sharedfiles/f...1458559987

Thanks in advance. MrTree.