Attempting to operate the Source SDK Hammer Level Editor in the Source 2006 engine for Half-Life 2 Deathmatch currently results in an error of: "Missing material, ...verify that your game directory is correct." If you have this problem, read on! This is a Source SDK bug caused by Valve and this is a work-around to fix the issue and operate the game in the Source 2009 version of the engine.

The cylinder method!

This patch will update ANY version of Half-life to the lates version, 1.1.1.0 Aimed at Owners still running their old CD version of HL or WON version as it's also know.

Lets you open (most) GCF files, which are compressed archives of Source Engine game content. Version 1.7.5 (installer)

[ADMIN EDIT]: This is a duplicate entry and slightly outdated. Please see this page for latest releases or, visit this page to find our other more updated entry.

A GUI for use with XP-Cagey's compile tools