I have posted this question in several other places but without getting a clear awnser. So let's try the creators. On my site (with my theme smartDark) there are 2 ways to sign up. 1st: in the box 2nd: in the left upper corner of the site below the logo. The box sign up works fine now, i had to do some modifications in the Your_Account.php file. But now i have still problems with the upper corner one. It says after a sign up: Could not insert data into users table. I get this in a forum screen (PHPBB). I use PHPNuke 6.0 and PHPBB 2.0.3.