Missing textures on HL2RP City map all of a sudden?

[usedfloppydisk_]

Okay, i'm confused.. Just yesterday I logged on to the server like usual, but the wires and grass were pink and black?! This has never happened before on the map, I have been playing on this server for 1 month and the textures were perfect. And just to let you know I have
HL2EP:2 And CS:S, which are what most textures are from, also I did notice I get a GMOD error message when I log onto this server with the map, so that may be part of it. This is the only map I have noticed lately with missing textures, the map used to have NO missing textures 2 days ago.. So were some textures updated or something?

[Atrioc]

This usually happens when you tab into another screen. Just Alt Tab out of your game and back in, it will reset the graphics on screen.

[Nicknero]

Wires and grass are both EP2 if I'm not mistaken. Verify game cache files on both Gmod and EP2. Then in Gmod main menu go to extensions -> Game Content and make sure all available games are sellected. Restart Gmod to apply changes and hope for the best.

If this didn't work, try the following:
Go to C:/..../steamapps/<username>/half-life 2 episode two/ep2
Copy the folders Materials, Models and Sounds.
Browse to C:/...../steamapps/<username>/garrysmod/garrysmod
Paste the 3 maps in there.
(Say yes to copying files to existing map. Say no to replacing existing files.)