I have a software that generates .xlsx file, but I keep getting "Unreadable content in file.xlsx" and the chart is deleted. If I open the same file on a MAC, no error and the chart is there. I am also reading online that these files can be opened in XP, Vista, and even Windows 8. I cannot confirm that.
I also read that this is a security bug in Windows 7.
Does anyone know how to fix this?
I cannot open the file on another OS, re-save it, then re-opened in Windows 7 because there are a lot of files in a fast pace environment.
Any help will be greatly appreciated