he developers are aware of this phenomenon. In the meantime you can reduce the risk of program hangs by adhering to the following:
Try to design so that the number of empty cells on the page is kept to an absolute minimum
Avoid using empty Objects... instead fill each Object with some content
I can see from your screenshot that you have at least one entire row of empty cells on that particular page. You also appear to have empty cells to the left and right of every other row on the page.
Hope this helps...
Paul