An update has been released for Left 4 Dead 2.

Tweaks to add-on management:
- Report conflicts between mission scripts in the Add-ons menu.
- Fixed checked items getting unchecked after reporting a conflict.
- Allow all add-ons to override base content at the main menu.
- Allow content-only add-ons on non-vanilla dedicated servers.
- Allow add-ons to override base mission and mode scripts on non-vanilla servers.

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