help fix error when in map

[death7086]

Hello my friend just got me Garry's mod today and I'm get a error in some maps i downloaded

[IMG]http://i100.photobucket.com/albums/m27/death7086/gm_ghosthunt_20000.jpg[/IMG]

Plz me fix this

[THEDANGER]

Get counter strike source or download the materials you need them to basically play any map other than the sandbox or use any gun

[death7086]

i have Half Life 2 and the 2 Episodes with TF2

I hope i don't have to get CSS

[QUOTE=acommentator;38296594]Get counter strike source or download the materials you need them to basically play any map other than the sandbox or use any gun[/QUOTE]
where are the materials i need?

[editline]3rd November 2012[/editline]

Good news its all fixed now thx you acommentator for the info what what it may have been