I have installed the RC1 and converted my phpBB2 2.0.19 without problems.

Then, starting the forum, I notice "board not available" and when trying to login with my admin account I get: "It was not possible to convert your password when updating this bulletin board’s software. Please request a new password. If you continue to have problems please contact the Board Administrator."

I am therefore locked out, I can't login, and requesting a new password gets me again the "board not available" message. Maybe it is important to know that I had chosen the same account name as administrator as the admin name I had in phpBB2