I encountered a similar problem when serving a pdf file from a CGI script. This seems to be related to MSIE. See the following link. If you use Netscape, you probably will be okay.
But I have not found any workaround yet. http://ppewww.ph.gla.ac.uk/~flavell/www/content-type.html Steve Lihn > -----Original Message----- > From: McDonald, Jonathan [mailto:[EMAIL PROTECTED] > Sent: Wednesday, November 06, 2002 11:03 AM > To: [EMAIL PROTECTED] > Subject: Losing Browser Session when Acrobat Plugin fails > Importance: High > > > Here's my problem, > > Scenario > I'm trying to send a PDF document, which has been rendered > with FOP back to > the client through ServletOutputStream. I'm generating a set > of XML files > that I then render into a PDF document and store the document > onto the file > system. > > I then read in the file as a Byte Array and write this to the > ServletOutputStream. > > Issue > > Sometimes I'm getting the "File does not begin with '%PDF-' " > error message > from Acrobat Reader. I've put a dummy ".pdf" at the end of > the URL to fool > IE but sometimes I still get the "'%PDF-' " error. > > When this happens the browsers session is lost and the user > will have to go > back to login screen. In this case, if the user tries again > to view the PDF, > the session is killed straight away, the only way to get it > to work again is > to go into Task Manager in Windows and kill the AcroRd32.exe > process and the > iexplore.exe process. > > If I don't kill the processes, then every time I attemped to > launch the > Acrobat plugin my session is invalidated. > > Has anyone else come across this problem? > > Environment > Server > IBM Websphere 3.5.5 running on AIX servers. > Client > Internet Explorer 5.5, Adobe 5.05 on Win2k > > regards > Jonathan > > ============================================== > Jonathan McDonald - E-Business Web Development > Honeywell Application Services (Ireland) > Phone +353 51 309824 Fax:+ 353 51 309821 > E-mail: [EMAIL PROTECTED] > > ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments, contains information of Merck & Co., Inc. (Whitehouse Station, New Jersey, USA) that may be confidential, proprietary copyrighted and/or legally privileged, and is intended solely for the use of the individual or entity named in this message. If you are not the intended recipient, and have received this message in error, please immediately return this by e-mail and then delete it. ==============================================================================