GMOD startup error

I get this error when joining servers and sometimes when starting up Gmod

SteamIsAppSubscribed couldn’t receive audio on line 76561198001631957

I searched it up and all I got where fixes to pirated GMOD, I have the legit, payed for version on my steam account, I do not have the pirated version.

Here to check:

I have:
Windows 7
ATI Radeon HD 4600 Series
AMD Athlon 64 X2 Dual Core Processors 4000+ 2.10 GHz

Say “Hi Facepunch” on the profile

Have you tried the following?

Verify Integrity of Game Cache Files
De-fragment Game Cache Files