Authoring tools error
When i use the portal 2 authoring tools, the model viewer and face poser works, but the hammer doesn't, it shoes this:
How can i fix this?
Try to verify the integrity of cache files.
Go to your games library (at steam) > Portal2 >[mouse right button] > Properties > Local Files tab > Verify integrity of game cache
useful tools and stuff here on TWP 
[spoiler]
[/spoiler]Go to your games library (at steam) > Portal2 >[mouse right button] > Properties > Local Files tab > Verify integrity of game cache
Did it, still showing error
What worked for me:
1. Delete Local Content for Portal 2 Authoring Tools
2. Verify Portal 2 Game Cache
3. Install Portal 2 Authoring Tools
4. Verify Portal 2 Game Cache
Indeed, what it really worked out for me was to delete:
vbsp.exe, vrad_dll.dll, vrad.exe, vvis_dll.dll, and vvis.exe
from your portal2/bin folder...
And then re-verify your Portal 2 cache.
useful tools and stuff here on TWP [spoiler]
[/spoiler]vbsp.exe, vrad_dll.dll, vrad.exe, vvis_dll.dll, and vvis.exe
from your portal2/bin folder...
And then re-verify your Portal 2 cache.
still donesn't work
1. Delete Local Content for Portal 2 Authoring Tools
2. Verify Portal 2 Game Cache
3. Install Portal 2 Authoring Tools
4. Verify Portal 2 Game Cache
I tryed that to, didn't change nothing.
I found the problem!
I found out that steam is installed in (H:) hard drive, and not in (F:)
So i went to steamsteamappscommonportal2bin
Opened "GameConfig.txt"
And changed everything that sayd "F:" to "H:". It works normally again. Thankyou anyway guys.