I upgraded my store from 1.4.9 to 1.5.6.4 successfuly but the front office is messed up. I guess it's due to a custom template that I'm trying to disable but I cannot do it. In back office I choose the default template and then click save but I get an error "error_warning".
my store is: http://www.auto-matriculas.com
Any helpis well appreciated!
EDIT: I've managed to delete the custom theme and the front office looks better now although with translation problems that I can fix. But the error_warning still appears when I try to edit my store in the back office.
