An update to Left 4 Dead 2 Beta has been released. The update will be applied automatically when you restart Left 4 Dead 2 Beta. The major changes include:

- Fixed inverted direction in script trace lines
- If a found game is using a Mutation add-on from the workshop, the "Download Add-on" button will open the workshop page
- Update some mutations to remove instances of invalid weapons or enemies

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- Restore freezer door in co-op mode
- Restore crane lowering sound

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- Break some barricaded doors so survivors can reach supplies
- Restore missing fire particle system
- Restore color correction for both Crash Course maps

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- Fixed survivors facing the wrong direction after intro
- Restore alarm clock in downstairs bedroom for co-op mode

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- Restore missing rain particle systems

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- Restore some missing chopper pilot lines
- Move survivors out of view during the escape sequence