Build 3.0.0.17 of xlsgen adds 4 fixes for validating XLS files against the Microsoft Office BFF file validator.

In addition to Excel 2010 file check on open, also recently added to previous Excel versions as part of service packs, Microsoft has been working on another deep file format validator for XLS files, which is here.

The important changes to ensure that xlsgen generated XLS files are successfully passing the test are included in this build.

So whenever this validator becomes part of Excel, xlsgen is already ready for it.