The upgrade from 1.7 to 2.5 may have gone wrong, but it is hard to tell.
I doubt it. I get no errors when I use any other template, but only RocketTheme template. I would have appreciated if someone could check the page / FTP / administrator area and see if anything is wrong.
I ask again, do I need to update Camber because I update to Joomla 2.5?