Your file is created using BIFF7(Excel95 or earlier versions). Aspose.Cells does not completely support BIFF7 file format. It supports BIFF7 encryption related to a few protected files. Aspose.Cells support BIFF8 or greater file formats (Excel97 - Excel2003). So you have to convert the file into greater versions.
Follow the steps for conversion:
1. Open your file "Suppliers.xls" into MS Excel (Excel97 - Excel2003).
2. Save As..."Microsoft Excel Workbook".
I have created your file into Excel 2002 format (The file is attached with this post). You may use it now.
It's not working. I have already tested with many typeformats. i have put again the original file saved in format "workbook excel" ==> http://207.234.225.64/Suppliers.xls
Try to load it with aspose.cells, and save it. I don't succeed to open the aspose's saved file without any errors coming from Microsoft Excel.
Well Workbook.LoadData() method only loads data , formulas and some formattings while all other contents and settings are not retrieved into the memory.
We recommend you to kindly try upgrading to and use latest version of the product which includes support for older BIFF7 (Excel 95/5.0 - 2003 Workbook) formats with enhancements now:
Also, see the document for supported input and output file formats by Aspose.Cells: