New Post: Problem setCellValueExplicit with PHPExcel_Cell_DataType::TYPE_STRING

Hello Mark,
I think I've found the failure.
1.) I've deleted and reinstall the PHPExcel Class and now the the script is running but I've still the problem that I need in the whole column B a String because the data has partically leading zeros as you can see I've datas from a query so I can't use $objPHPExcel->getActiveSheet()->setCellValueExplicit($col.$rowNumber,$cell,PHPExcel_Cell_DataType::TYPE_STRING);
but if I use the above script I'll see in the Text editor the following error message:
<b>Notice</b>: iconv_substr(): Detected an illegal character in input string in <b>C:\xampp\htdocs\labelmanagementDB\Classes\Classes\PHPExcel\Shared\String.php</b> on line <b>576</b><br />
<br />
<b>Notice</b>: iconv_substr(): Detected an illegal character in input string in <b>C:\xampp\htdocs\labelmanagementDB\Classes\Classes\PHPExcel\Shared\String.php</b> on line <b>576</b><br />

do you have any idea to solve the problem.

Thanks for your help.