CSS Server HELP!!!!!! Please

[slick6732]

I have been at this for 2 weeks, I have tried to make a css dedicated server. ran the hldsupdate made srcd folder etc... all seems good when I start server, forwarded all necessary ports.
ISP AT&T
Router 2-Wire 2701 HG-B
Ports Forwarded:
UDP 1200
UDP 2700-27015
UDP 27020
TCP 27015
TCP 27030-27039
canyouseeme shows ports open.

The problem is, when I open steam server list, I can see my server listed as LAN. But when I try and launch from there I get an error: you do not have this 3rd party mod installed.
When I launch game and hit find server, I am not list as LAN there.
when friends try and join they get the 3rd party mod error or server busy error. (With external IP)
I can join game from console with local IP, but server has been online for two weeks and have not had a single person enter it.

Any and all suggestions are greatly appreciated, I have read posts until my eyes crossed and cant seem to figure it out.

Also, I have run it in DMZ, with same results

[Beaverbeliever]

If your able to join other CSS servers, then try reinstalling the SRCDS server. If you get the same error for other CSS Servers, try reinstalling your personal CSS.

But it really sounds like a SRCDS reinstall will do it.

[slick6732]

Beaverbeliever Wrote:If your able to join other CSS servers, then try reinstalling the SRCDS server. If you get the same error for other CSS Servers, try reinstalling your personal CSS.

But it really sounds like a SRCDS reinstall will do it.

Guess I wasnt real specific, sorry
I am running the server as a dedicated, the only thing on it is SRCDS, and of course an OS, XP Professional SP2
Can join all other servers fine off of computer I play CSS off of.
Thanks though !!!!
If any additional info is missing I will be glad to post it, If it helps the cause.....