[BlueOnyx:06156] generated pdfs - https internet explorer

[Gerald Waugh]

We have an SSL site with an application that generates PDF files which
the customer can download/display in browser. Working flawlessly in both
Firefox and Safair. 

Under Internet Explorer we get https errors. If we call the application
with http (not https) it works. But call with https and we get error
messages like “The file is currently unavailable or cannot be found.
Please try again later.” and “The file could not be stored in cache”.

We tired some of the things found googling and found many postings,
like;
  header(‘Cache-Control: maxage=3600′);
  header(‘Pragma: public’);
but no joy, 
does anyone have experience with this IE problem?

-- 
Gerald