BuddyPress.org

@electroman we can’t give you a step by step guide this is not a paid support forum however we can help but you will need to have first ensured you have followed all the steps outlined by the template pack and read the help guide linked to earlier, bear in mind that the template pack doesn’t do all the work for you and there is a degree of coding skill and understanding of WP theme files required.

You will need to provide a link to your site that works – if that is your site that you linked to it’s throwing PHP errors and exposing your server path structure which isn’t a great idea – then someone will hopefully be able to spot what elements you may not have replicated in your BP files.

The 404 error is possibly that you haven’t set a permalink structure, and you will need to visit the permalink page in the backend and select a structure and save – the assumption is made that you are running mod_rewrite and able to write to the .htaccess file i.e permalinks work under plain WP?