Garry's mod 9

[bamboopro]

I'm having a bit of a problem. Whenever I attempt to play, I get this error:

I think it may be happening because I don't have CSS, although people have told me you don't need it. So my question is, do I need CSS in order to play GM9? If not, why isn't the mod working? Thanks.

 

[Naph]

You need Garry's mod 10 in order to play 9.
True infact.

 

[bamboopro]

You need Garry's mod 10 in order to play 9.
True infact.

That doesn't make any sense.

Could someone actually give me some real advice? Do I need CSS in order to play garry's mod?

 

[Xendance]

That doesn't make any sense.

Could someone actually give me some real advice? Do I need CSS in order to play garry's mod?

Yes.

Now go buy Garry's Mod.