Does any of your variables contain complex values:
e.g. userID, timeSeconds, hashedString?
To check you can use the IsSimpleValues() function, e.g.
IsSimpleValue(hashedString)
> <cfhttpparam value="#userID#" name="u" type="formfield" >
> <cfhttpparam value="#timeSeconds#" name="t" type="formfield" >
> <cfhttpparam value="#hashedString#" name="x" type="formfield" >
> </cfhttp>
> <cfoutput>filecontent: #cfhttp.FileContent#</cfoutput>
> <cfoutput>header: #cfhttp.header#<br />
> mime: #cfhttp.mimetype#<br />
> cfhttp:responseheader: #cfhttp.responseheader#</cfoutput>
> <cfcatch type="any">
> <cfoutput>ERROR</cfoutput><br />
> <cfoutput>cfcatch.type: #cfcatch.type#</cfoutput><br />
> <cfoutput>cfcatch.Detail: #cfcatch.Detail#</cfoutput><br />
> <cfoutput>cfcatch.Extendedinfo: #cfcatch.extendedinfo#</cfoutput><br
> />
> <cfoutput>expression error number: #cfcatch.errnumber#</cfoutput>
> </cfcatch>
> </cftry>
>
> is causing the error below and I cannot see how this could be.
>
> header: HTTP/1.1 200 OK Content-Type: text/html Set-Cookie:
> ASPSESSIONIDCACBDACQ=GEDOJIAAMNJNLKMBPEMGIPIO; path=/ Date: Fri, 06
> Jun 2008 17:59:21 GMT Cache-Control: private Content-Length: 1298
> X-Powered-By: ASP.NET
> mime: text/html
> cfhttp:responseheader: ERROR
> cfcatch.type: Expression
> cfcatch.Detail: The expression has requested a variable or an
> intermediate expression result as a simple value, however, the result
> cannot be converted to a simple value. Simple values are strings,
> numbers, boolean values, and date/time values. Queries, arrays, and
> COM objects are examples of complex values.
> The most likely cause of the error is that you are trying to use a
> complex value as a simple one. For example, you might be trying to use
> a query variable in a cfif tag.
> cfcatch.Extendedinfo:
> expression error number: 0
>
>
> I've tried using type="URL" and type="header" without luck. I am not
> using a form at all. Does anyone have any ideas?
>
> Thanks!
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