TYPO3 Core

This issue is still present in Typo3 4.1

I just fixed the bug and uploaded the updated file to this issue report (this is file /typo3/mod/tools/em/class.em_index.php)

The modification is the following :
At line 2422, replace the following lines :

header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.$filename);
echo $backUpData;
exit;

by :

header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.$filename);
header("Content-Transfer-Encoding: binary");
echo $backUpData;
exit;

I have just posted the diff as well

I tested this with TYPO3 4.3 and IE8.
The file is offered for download and saved correctly.

Can't reproduce with 4.3 in IE7