Fatal error: 'Not an Excel file'

Hi!,
I'm testing native excel reader in xampp and works correctly, but when i test in my personal hosting appears this message: "Fatal error: Uncaught exception 'Exception' with message 'Not an Excel file' in /volume1/web/project/test/claseExcel/BiffWorkbook.inc.php:820 Stack trace: #0 /volume1/web/project/test/index.php(11): BiffWorkbook->__construct(Object(CompoundDocument)) #1 {main} thrown in /volume1/web/project/test/claseExcel/BiffWorkbook.inc.php on line 820"

In line 820 the $entry ['desc']['name'] param returns empty value.

Anyone knows the source of the problem? PHP configuration problem? APACHE configuration problem?

Thanks!

Hola Javier, lo has solucionado? a mi me pasa lo mismo