Above you said you created extra pages, widgets sidebars. Did your site work before you customized? Does the site work with BP-default activated? Trying to determine if it’s an install problem or something you’ve added post install as that could be a million different things.
If a user is logged into WordPress in the same browser there is no way to have a user register another account. Try this on any site on the web an I guarantee you can not.
If you copied the files back over and it’s blank try to go back to admin >> buddypress >> forums set up and do a re install. Click the Use an existing bbPress installation button.
I would do it as a settings component plugin if you want users to choose colors. Check out the groups css plugin to see how that was done if you want users to be able to add their own colors. Like Ray says, if you let users roll their own CSS then you will have the nightmare that was myspace. If it’s just pre made CSS files it’s easy to have a switch based on xprofile field. Search here it’s been asked before.
I wouldn’t change slug. I’d create 3 different forms in register.php and show the corresponding form. You could start with buttons for types then when clicked it shows correct form. But there will be a problem because the register for it is tied to options in admin and I’m not sure you can have 3 different sets.
It’s not really at hard once you figure it out. The bp templates are easy to add. I’ve added bp to numerous woo themes over the past year with little fuss.
