OK so I’ve had the same problem and have built a very clumsy workaround.
PROBLEM: When the user click the email verification it sends them to verify.php and logs them in to WP but my Buddypress doesn’t know they are logged in and asks them to login. If the user just ignores the login request there is no problem but users don’t do that so they try to login and get the same “error..please provide a valid activation key” message because the account is already active.
MY RUBBISH ANSWER: The only thing that worked for me was to hide the BP admin bar and handle login links manually then change the text on the verify.php to a simple ‘congratulations, you’re in’ message. The downside of this is that I lost the use of my BP-Sliding-Login-Panel which I love. so I would be very grateful for a real solution to this.
I have been working through a similar problem where WP sends an activation email and the new user replies. The user is then logged in to WP but NOT BP…. so if the user tries to login as BP says they should it will generate an error because they are already logged in!
I am having to tell newly registered users to close their browser then re-open and login.
If someone comes up with a more viable option I would be very grateful.
