I have a workbook that I was just working in, and now when I open it, the worksheet area is gray and i can't select any cells, although, I can move the cursor with the arrow keys and see the selected range change in the Name Box, and if I use keyboard commands to navigate from sheet to sheet I can see the formulas change in the Formula Bar, but I can't see the worksheet itself or select anything with the mouse.
1. I can see the worksheets in the Windows preview in the folder and
2. I can see, edit and use the worksheets in Full Screen mode (View Menu)
Any idea what this is? I disabled my addins and rebooted but no change. The file opens on coworker machines