I also just registered while this problem has been occurring. I understand that repairs are underway. The following might help. When I try to go to my songbook, I get the following message

This query was executed:
select songbookname,id from songbookadmin where owner='pete57' and selected='true'

and the page looks like it's corrupted. Other partial error messages show up on the page intermixed with graphics.
Hope the repair is simple... I'm looking forward to trying out the songbook.
Pete