[scan-pa]

Did you remember to update the super Admin user Id's in the config.php file???

// ****** SUPER ADMINISTRATORS ******
// The users specified below will have permission to access the administrator permissions
// page, which controls the permissions of other administrators
$config['SpecialUsers']['superadministrators'] = '2,10760,10759,12793';

Or if you use the additional special user code (Found in these posts), did you remember to add this line in config.php after the new 3.7.0 Gold files were uploaded?

****** PRIVATE MESSAGE ADMIN ******
// The users specified below will have permission to view all user PMs
$config['SpecialUsers']['privatemessageadmin'] = '2,10760,10759,12793';

Hope that helps.