Created attachment 27400 [details] Java source to replicate When opening an xls file that contains a background image, modifying the xls and then saving, I get an invalid xls file when I open in excel 2007. Excel gives the error File error: data may have been lost. The excel file opens but the background image is lost. This does not happen with XSSF formats. I have attached test case to replicate.
Created attachment 27401 [details] Excel 2003 with background
Created attachment 27402 [details] Excel 2007 with background
I have tried this with 3.8-beta3 as well as 3.7 without success. This used to work in POI 3.1.
This problem should be fixed in trunk. Please try with a nightly build - see download links on http://poi.apache.org/ or build yourself from SVN trunk, see http://poi.apache.org/subversion.html