Build 5.0.0.53 of xlsgen fixes a problem related to parsing HTML fragments to be inserted in cells, improving how it takes into account the height of the formatting runs.
Build 5.0.0.52 of xlsgen fixes a problem related to copying/pasting custom column widths of empty columns (so columns with no content, only width formatting).
Build 5.0.0.51 of xlsgen fixes a problem related to writing header-footer pictures. Copying header-footer pictures across sheets did not work. It now works in XLS, XLSX and XLSB files.