Hammer Error while compiling map :/

[Uppernate]

So, I was compiling my map... But suddenly this error popped up:

** Executing...
** Command: "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\sourcesdk\bin\orangebox\bin\vbsp.exe"
** Parameters: -game "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\garrysmod\garrysmod" "C:\Program Files (x86)\Steam\steamapps\[B][Removed][/B]\sourcesdk_content\gmod\mapsrc\gm_devtown.vmf"

SteamStartup() failed: SteamStartup(0xf,0x0036EA98) failed with error 1: The registry is in use by another process, timeout expired

** Executing...
** Command: "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\sourcesdk\bin\orangebox\bin\vvis.exe"
** Parameters: -game "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\garrysmod\garrysmod" "C:\Program Files (x86)\Steam\steamapps\[B][Removed][/B]\sourcesdk_content\gmod\mapsrc\gm_devtown"

Valve Software - vvis.exe (Oct 31 2012)
SteamStartup() failed: SteamStartup(0xf,0x0036E0AC) failed with error 1: The registry is in use by another process, timeout expired

** Executing...
** Command: "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\sourcesdk\bin\orangebox\bin\vrad.exe"
** Parameters: -game "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\garrysmod\garrysmod" "C:\Program Files (x86)\Steam\steamapps\[B][Removed][/B]\sourcesdk_content\gmod\mapsrc\gm_devtown"

SteamStartup() failed: SteamStartup(0xf,0x003FEC78) failed with error 1: The registry is in use by another process, timeout expired

** Executing...
** Command: Copy File
** Parameters: "C:\Program Files (x86)\Steam\steamapps\[B][Removed][/B]\sourcesdk_content\gmod\mapsrc\gm_devtown.bsp" "c:\program files (x86)\steam\steamapps\[B][Removed][/B]\garrysmod\garrysmod\maps\gm_devtown.bsp"

The command failed. Windows reported the error:
"Couldn't found destination file."

How can I fix this?

[Nightscout]

Do you have a pirated copy or something?

[IronPhoenix]

Start steam. Ensure it is running and that you are using source sdk started via steam.

[Uppernate]

I don't have a pirated copy. And yes I do start Source SDK via Steam...
EDIT: Everything went okay until the Garry's Mod update (some time ago)

[GoldPlatinum]

just restart Steam lol

happens to me all the time

[Uppernate]

None of these work at the moment

[editline]29th March 2013[/editline]

Got it working, I noticed a object out of the map. Deleted it, problem got solved...