I have this excel workbook (.xls) that contains a picture. In general the picture shows up, but when someone with Excel 2004 (mac) tried it, the picture was X'd out.

It works for Excel 2003, 2007, 2008, but not on this person's computer (who was running Excel 2004).

The picture was saved as both .png and .jpg and neither worked.

Does anyone have any ideas on what the problem is and how to fix it?

Thanks