All of my Excel 2003 chart tabs are showing up as blank. This includes both newly created chart tabs and chart tabs in existing spreadsheets, as well as both pivot table charts and regular charts.
Oddly, charts that are on a regular worksheet tab show up fine -- only charts in their own tab are affected.
I've run Excel Diagnostics and they found no problems.
I have verified that Excel Options > Advanced > Display Option > Objects is set to All for each of the spreadsheets.
How do I make chart tabs work again?