Delete doesn't work??

HELP!!!!

I downloaded the lastest version of Builder 342 today.  I started a practice book. 

First I added a animation of 12 frames that loops continuously.  It worked correctly when I reviewed it in Interact.  Then I added an image png file which does nothing but sit on the page. 

When I try to delete any element on the page I get an error:
"An error occurred with the database; it is suggested that you quit and relaunch InteractBuilder, but you can also choose to go to the Manage page instead.  What do you wish to do?"

No matter what you do it when you reopen the book.  All the elements are still on the page.  I cannot manage to delete an element!!!!