hi i downloaded sapien and open blood gulch.scenario i tried to replace the normal warthogs with Gauss hogs but they wont work it shows a pop up saying "not all the selected tabs could be added to the palette: you selected one or more files that couldn't be loaded correctly. contact your nearest bungie programmer for assistance" help

Try one of these for additional help
http://hce.halomaps.org/index.cfm?search=vehicle+tutorial

k thanks i reply again if i cant get it to work

it may not be able to find certain tags
check the very bottom of your debug.txt

03.25.09 16:20:49 failed to load effect tag 'h2\vehicles\hogs\g_warthog\effects\garbage killer'
03.25.09 16:20:49 failed to load vehicle tag 'h2\vehicles\hogs\warthog\garbage\right_back_fender\right_back_fender'
03.25.09 16:20:49 failed to load effect tag 'h2\vehicles\hogs\g_warthog\effects\rb taillight sparks'
03.25.09 16:20:49 file_open('tags\h2\vehicles\ghost\effects\death.damage_effect') error 0x00000003 'The system cannot find the path specified. '
03.25.09 16:20:49 couldn't open damage_effect tag 'death.damage_effect'.
03.25.09 16:20:49 failed to load effect tag 'h2\vehicles\hogs\g_warthog\effects\garbage killer'
03.25.09 16:20:49 failed to load vehicle tag 'h2\vehicles\hogs\warthog\garbage\right_front_fender\right_front_fender'
03.25.09 16:20:49 failed to load effect tag 'h2\vehicles\hogs\g_warthog\effects\rf fender spawn'
03.25.09 16:20:49 failed to load model_collision_geometry tag 'h2\vehicles\hogs\g_warthog\g_warthog'
03.25.09 16:20:49 failed to load vehicle tag 'vehicles\g_warthog\g_warthog'

You need to find those files and put them in the directories it says.

There is one file, however, that does not come with the download. Garbage killer.effect.

Does anyone know what that tag does?