Build 4.5.0.68 of xlsgen has 6 fixes :

1) fix picture duplication for XLS files (mso drawing solver container records correctly placed)

2) migrate form controls from XLS files to XLSX/XLSB files

3) migrate shape arrows properly from XLS files to XLSB/XLSB files

4) automatic source code generator exposes more accurate column width (floating point values)

5) sparkline rendering of "same min and max property for all sparklines" in XLSX/XLSB files

6) translation of formula error codes such as #VALUE! in the 6 formula languages (english, french, german, spanish, italian and portuguese). So #NAME? appears as #¿NOMBRE? in spanish, #VALUE! appears as #WERT! in german, and so on. Don't forget to set the formula language before processing a formula (reading or writing) with the workbook FormulaLanguage property.