Hi Aspose,
After simply re-saving the same .xlsb file in Aspose v.8.5.2, we get the following errors when opening the file in Excel 2007:
“Excel found unreadable content in ‘…xlsb’. Do you want to recover the contents of this workbook? If you trust the source of the workbook, click Yes.”"Excel was able to open the file by repairing or removing the unreadable content.Removed Part: /xl/drawings/drawing1.xml part (Drawing shape)."
Also some drawings and charts were missing.
This is reproducible in Excel 2007 only, after saving with Aspose v8.5.2.
Opening and re-saving the original file in Excel 2007 does not cause this issue.
Java code to reproduce the issue:
// Open Excel file.
final Workbook workbook = new Workbook(“C:\Temp\UnreadableContent.xlsb”);
// Save Excel file.
workbook.save(“C:\Temp\UnreadableContent_out.xlsb”);
Attached is the .xlsb file in question.
Thanks.