Source SDK and Orange Box Problem

[fonix232]

Nah, I've solved one problem, then here comes the other:
I've downloaded the Source SDK. I start it. With the source games it runs perfectly, but with any OB games it says in a FATAL ERROR window:
"MountFileSystem( 312 ) failed: SteamMountFilesystem(5892,312,0x198bfd64=,0x192bfc54) failed with error 5:
No Steam Content Servers are available.
What should i do? Bcus I want to make a Portal Fun Music Vid but without Source SDK I can't!

 

[Renegade89]

Remove steam patch, delete steamapps cache, try another crack/launcher.

 

[fonix232]

I am using UnDead Patch. What would I use?

 

[fonix232]

Well. it didn't helped.

 

[.ISO]

SMD
http://www.freesteam.org/forums/clients-cracks-launchers/4379-smd-v2-0-0-final-rbpfc1.html