The parameter is incorrect - doc.Save sFile

I've written my first VBA macro to export data from XLS to a named XML file. My initial, simplified tests went fine but the full version errors with the message:

Run-time error '-2147024809 (80070057)':
The parameter is incorrect

and the line 'doc.Save sFile' is highlighted.

Can anyone help?

NOTE: I had to post the code as a Word file attachment because the site thinks it contains HTML.

Sub OrdXMLExport.docx

What is the value of sFile when it errors?

The file names are in the first column of the XLS doc and follow the format ord_EB100.log. No path is specified because I want the XML saved in the same folder.

Bingo.......

This is my first bit of VBA... How, and where, do I assign a value to the sFile?

Thanks for your help. Aware that a value had to be declared somewhere I had a careful look through the code (and the XLS doc) and found the error. That particular part of the VBA script was missing 'sFile = .Cells(lRow, 1).Value'.

Now sorted.