'All Journal Entries' report won't load all of a sudden. How to get it to load again?

My 'All Journal Entries' report won't load all of a sudden. It previously was working perfectly, but now it won't load. I click to have it come up, but all I see when I hover over the Sage icon on the toolbar is the main Sage window and another window that's invisible/blank. What did I do/not do to cause this? What can I do to get it to load like a normal report again?