HL2DM problem

[iZenna]

i've downloaded the Half Life 2 Deathmatch GCF file and extracted it with no problem at all,
there is also no problem loading the game, but one problem occured,
i can't reload my ammunition at all!~ means after my ammo for my shotgun had used up, i can't seem to pick up the ammo cause it tells that my shotgun ammo is full

any suggestions to this?

the link to the GCF:
http://mediafire.com/?dntghemnyz4