We were made aware of an issue that can affect people using Leopard's firewall with ProjectForum or CourseForum. This is relevant for all versions, not just version 6.0.
If you've got the firewall set to "Set access for specific services and applications", Leopard will ask you the first time you run if you'd like to allow the application to accept incoming network connections. When you agree to this, Leopard actually goes and modifies the application. Unfortunately, this causes our application to get corrupted and fail to start up again without a reinstall.
At present the workaround is not to enable that setting in the firewall; we're investigating how we might be able to address this issue from our end.

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