Thanks Ana,
I went to update the Expressions with the current version. The teacher hasn't used them since last spring because of the issues with them. However, about half of the set wouldn't even allow me to push the menu button. They would power on fine, but no matter how I tried to push it the menu would not come up. I updated the rest, but haven't tested them yet. Is there something I can do to make the buttons work again? The teacher said they were registered and everything before, but the inconsistencies with question reception kept her from using them. It seems odd that so many would have that specific key become faulty. Any suggestions?