New Post: Failed loading of an Excel2007 file

Hi all !

I'm trying to load an Excel file, but the reading fails.
Here are the messages :

( ! ) Notice: Trying to get property of non-object in .../PHPExcel/Classes/PHPExcel/Reader/Excel2007.php on line 1378
( ! ) Warning: Invalid argument supplied for foreach() in .../PHPExcel/Classes/PHPExcel/Reader/Excel2007.php on line 1378
( ! ) Notice: Undefined offset: 0 in .../PHPExcel/Classes/PHPExcel/Reader/Excel2007.php on line 1394
( ! ) Fatal error: Call to a member function attributes() on a non-object in .../PHPExcel/Classes/PHPExcel/Reader/Excel2007.php on line 1396

The first notice seems to be the result of an error in simplexml_load_string, thus returning false instead of an object that can be parsed below...

If you have any idea on what the problem might be, do not hesitate :)

Thank you !