HELP! Almost done with a presentation and it is grayed out and locked up.

One of my presentations has grayed itself out and is locked up. The home screen has also zoomed itself out extremely far and reports an error whenever I try to make any changes once I get it zoomed back in. The errors are variable, from, "too large of data," to "images outside of frame," unable to complete, see manual.
I upgraded my account to the educator account (since I am an educator) to see if it was locked up due to space restrictions. This didn't seem to fix the problem.