[@_ck_ Participant 17 years, 2 months ago]

You’re almost there. You need to either turn on multiviews or rewrite rules in your htaccess file if you want to use slugs. See #2 or #3 here:

https://bbpress.org/documentation/faq/

I recommend #3 even though it’s a few more steps.

Some servers don’t even support multiviews so #3 is a must.