Excel 2007 - issue with TEXT_CONVERT_XLS_TO_SAP

Has anyone encountered any errors using the function module: TEXT_CONVERT_XLS_TO_SAP to upload data from a spreadsheet created using Excel 2007 ?

The program runs fine on computers with Excel 2003 and is not working on computers with Excel 2007. Did not find any relevant OSS notes either.

Any suggestions ?

Thanks

Sridhar