Cannot compile models - Studiomdl.exe won't connect to steam, then nothing on steam launch

[Karmah]

I'm trying to compile a model and when I compile using source sdk's studiomdl, i get this error :
[quote]SteamStartup() failed: Steamstartup(0xf, 0x0018f170) failed with error 1: failed to take master pipe connection lock[/quote]
Then if I try to launch anything else on steam after I get this error, nothing on steam can connect unless I restart my computer.

Steam is running when I try to compile
I've tried restarting steam
I've tried restarting my computer
I've re-installed Steam
I've also deleted both ep1 & orangebox studiomdl.exe's and it made no difference when steam re-downloaded them.

Is it because I'm on windows 7 64bit? I've tried running in compatibility mode and as administrator but nothing worked.

[flippy645]

try compiling it with gui studio mdl

[Karmah]

It still uses studiomdl I imagine, but will give it a shot.

[editline]06:19PM[/editline]

Tried it, same thing basically.

[quote]SteamStartup() failed: SteamStartup(0xf,0x0018FB3C) failed with error 1: failed to take master pipe connection lock
[/quote]

A slightly different error.

[editline]06:19PM[/editline]

I love how now I cannot contribute to the tf2 contribution page.

[Karmah]

Bumping again because it didn't make a difference, Even reinstalled source sdk

[Karmah]

Third bump

[Karmah]

fourth bump

[Gbps]

Delete your ClientRegistry.blob in your Steam folder, it works for me.

[Karmah]

Tried it, didn't work.

[Papa Gator]

Wow, you have it bad. I thought i had it bad, my Garry's Mod sometimes freezes making me go to Task Mana. and ending the hl2.exe process, then that happens. I rely on restarting steam by ending Steam.exe, did you try that?