Garrrys Mod Is missing Hl2 Maps

Garry's Mod general
#1

If I go to start a new game and click and Hl2 related maps, it fails to load and this shows up in the console-

CModelLoader::Map_IsValid: ‘maps/ep1_c17_05.bsp’ is not a valid BSP file
map load failed: ep1_c17_05 not found or invalid

http://www.facepunch.com/fp/emoot/wtc.gif

By the way I’m running Gmod on a mac

#2

-snip-

#3

Do you have Half-Life 2 Episode One installed?

#4

EP1 is something else than HL2.

Do you own HL2 on steam? The source engine doesn’t include the HL2 scenes, just models, materials and sounds.

#5

Well, its obviously a EP1 map, so most likely he does not have EP1 installed.
ep1_c17_05.bsp

#6

But the title says HL2

#7

Yes i have it installed.

#8

Try verifying Episode One’s cache.