I have the forum set up and working. When a user registers, it sends the email to validate correctly, but if you "post new topic" it doesn't send an email that someone posted a message to your topic. Is there a setting for this? Or is it disabled in 1.9.4 rc1? Thanks.

The current forum version is RC2. Do you have a problem when you make this on the forum? If not you should upgrade to RC2, if it's available.