A question relating to cfcontent and session variables, with a hint of URL 
variables.

We are migrating from a relatively open system to one that has a login and 
session management.  We have stumbled across something that seems to be 
behaving oddly, though I don't know why.  We have a coldfusion page that will 
generate a report as HTML.  If the user selects a button to save it to excel, 
it runs the same page, but inserts the 

<CFCONTENT TYPE="application/vnd.ms-excel" reset="yes">
<CFHEADER NAME="Content-Disposition" VALUE="filename=myreport.xls">     

at the top.  The only other difference, is the variables to generate are passed 
through as URL variables.  Before adding the session, they worked fine. Now 
though, and it is not all situations, it almost seems like IE or Excel are 
trying to open a new instance of IE outside of the session in an attempt to 
download the file.  As I said though, it is not all.  This link...

reportactionoutput.cfm?DATEPARAMS=Dec 09, 
2005&DATEPARAMSLENGTH=1&reportlevel=National&reporttype=ABC&reportparam=465&saveToFile=yes

does not work, with excel popping up an error message saying "Cold not open 
"http://mysite/reportactionoutput.cfm?DATEPARAMS=Dec 09, 
2005&DATEPARAMSLENGTH=1&reportlevel=National&reporttype=ABC&reportparam=465&saveToFile=yes"

Now, if I run a slightly different report type, the exact same url with maybe 
another parameter like this
reportactionoutput.cfm?DATEPARAMS=Dec 09, 
2005&DATEPARAMSLENGTH=1&reportlevel=National&focusstate=CA&reporttype=ABC&reportparam=465&saveToFile=yes

It opens fine, no issues.  The only thing I found that may fix the problem is 
changing the spaces in the url variable to %20  This falls into different 
reports doing different things, not common code so there is a lot of places to 
change it, with no full assurance that this will fix the issue.  

Anyone run into anything similar?

Thanx!

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