strange bug with phpexcel

Topics: Developer Forum
Jan 13, 2015 at 10:55 PM
a user downloads a file from the Internet. when you try to import it with phpexcel, an error occurs.
Fatal error: Uncaught exception 'PHPExcel_Exception' with message 'You tried to set a sheet active by the out of bounds index: 1. The actual number of sheets is 0.'

if the file is open and resave, errors when importing NO!
operating system locks the file content from the Internet. what to do?