• Added a drop-down list in the SDK Launcher that allows the user to switch between The Orange Box engine and the Half-Life 2: Episode One engine
  
• Two new lighting preview modes are available in Hammer
  
• Models are automatically centered when loaded in Faceposer
  

Bug Fixes

• Fixed crash and corrupt configurations for users that don’t own any Orange Box games
  
• Resolved issues with building models for any games that that use the Half-Life 2:Episode 1 engine
  
• Fixed crashes in Hammer and Faceposer when HL2 is set to the active game
  

Known Issues

• Cannot create shortcuts to Hammer, Faceposer, and Model Viewer
  
• Linux makefiles for the Orange Box source code are incomplete and will be updated in the next release
  
• The Particle Editor is not presently included in the Source SDK
  
• SDK shader code only included with mods built to use Half-Life 2:Episode 1