Gmod Invisible props issue

[Hellspawnceri]

Okay, ever since Gmod update 161 I've been having this issue with certain props being invisible. I thought it might just be the update, but it seems to be something to do with the TnB content. I know this because I made a clean install of Gmod and the props that were invisible aren't after removing the content. I also added the megapack again just to double check, and they went back to being invisible.

I have no idea what is causing this to happen, and I don't think anyone else is experiencing this issue. It's really starting to bug me because I find myself bumping into props that I can't see on the server all the time.

I uploaded a video of exactly what I'm experiencing, this issue also includes default props that start on maps.
[video=youtube;Q9-0WCZ1jhY]http://www.youtube.com/watch?v=Q9-0WCZ1jhY&feature=youtu.be[/video]

Here's what pops up in the console when I try to spawn some of these props.

MDLCache: props_c17\oildrum001.mdl needs to be recompiled
Error Index File for 'props_c17\oildrum001.mdl' checksum 1350315459 should be -432517636
MDLCache: props_wasteland/controlroom_filecabinet001a.mdl needs to be recompiled
Error Index File for 'props_wasteland/controlroom_filecabinet001a.mdl' checksum -987365340 should be -1721585567
MDLCache: props_wasteland/controlroom_filecabinet002a.mdl needs to be recompiled
Error Index File for 'props_wasteland/controlroom_filecabinet002a.mdl' checksum 392479737 should be 1386165469

 

[_Nirri™]

Tried verifying the cache of EP1/EP2?

 

[Helios]

Refer to this aswell.
http://taconbanana.com/vb/showthread.php?48071-quot-Invisible-Props-Players-Entities-quot-Bug

 

[Dark_Knight]

It's not the bug above, I had this issue as well here's how to fix it:

Unmount Portal 2 and Left 4 Dead 2 then restart GMOD. For some reason both those screw up how the props work.

 

[Hellspawnceri]

Yup, that fixed it. Thanks Dark Knight.