Steam Error: No SteamUser

[Casadis]

I get this error every time I launch Garry's mod
[IMG]http://i.imgur.com/08fJk.png[/IMG]
And I've done everything on the list and nothing fixes it.
And here is proof I own garry's mod
[IMG]http://i.imgur.com/XfR5el.png[/IMG]

[bradenm650]

I just close steam with task mannage like Ended the porcesses and started back up and it went :)

[Casadis]

Thanks so much, it's been fixed now.