An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include:

• Fixed the game failing to launch on Mac OS X 10.5
• Fixed a client crash caused by using custom HUD files
• Fixed a client crash related to the hatless hats and the character loadout screen
• Updated the network interpolation and update convars so they can be changed when dead