Thank you for the suggestion, cebe. I tried removing the "Pragma" header just before sending the file to the user-agent, but this measure does not correct the problem for me. I confirmed that the "Pragma" header is indeed gone from the response (using Firebug), but I still receive the error dialogs in IE.
Thank you for the suggestion, cebe. I tried removing the "Pragma" header just before sending the file to the user-agent, but this measure does not correct the problem for me. I confirmed that the "Pragma" header is indeed gone from the response (using Firebug), but I still receive the error dialogs in IE.