Error with multiple PDF Generation in CF - coldfusion

Question

I'm getting an error when producing a multi-page PDF.
The pages attribute is not specified for the MERGE action in the cfpdf tag.
The line that is causing the issue is: <cfpdf action="merge" source="#ArrayToList(variables.pdfList)#" destination="promega.pdf" overwrite="yes" />
I tried looking in Adobe's documentation bug cannot find an attribute pages for the merge action. Thoughts?
<!--- Append PDF to list for merge printing later --->
<cfset ArrayAppend(variables.pdfList, "#expandPath('.')#\general.pdf") />
<cfset variables.userAgenda = GetAttendeeSchedule(
variables.event_key,
variables.badgeNum
) />
<!--- Field CFID is the id of the agenda item; use this for certificate selection --->
<cfif variables.userAgenda.recordcount>
<cfloop query="variables.userAgenda">
<cfset variables.title = Trim(variables.userAgenda.CUSTOMFIELDNAMEONFORM) />
<cfpdfform source="#expandPath('.')#\promega_certificate.pdf" destination="#cfid#.pdf" action="populate">
<cfset variables.startdate = replace(CUSTOMFIELDSTARTDATE, "T", " ") />
<cfpdfformparam name="WORKSHOP" value="#variables.title#">
<cfpdfformparam name="NAME" value="#variables.badgeInfo.FirstName# #variables.badgeInfo.LastName#">
<cfpdfformparam name="STARTDATE" value="#DateFormat(variables.startdate, "medium" )#">
</cfpdfform>
<!--- Append PDF to list for merge printing later --->
<cfset ArrayAppend(variables.pdfList, "#expandPath('.')#\#cfid#.pdf") />
</cfloop>
</cfif>
<cfif ArrayLen(variables.pdfList)>
<cfpdf action="merge" source="#ArrayToList(variables.pdfList)#" destination="promega.pdf" overwrite="yes" />
<!--- Delete individual files --->
<cfloop list="#ArrayToList(variables.pdfList)#" index='i'>
<cffile action="delete" file="#i#" />
</cfloop>
<cftry>
<cffile action="delete" file="#expandPath('.')#\general.pdf" />
<cfcatch></cfcatch>
</cftry>
<cfheader name="Content-Disposition" value="attachment;filename=promega.pdf">
<cfcontent type="application/octet-stream" file="#expandPath('.')#\promega.pdf" deletefile="Yes">
<cflocation url="index.cfm" addtoken="false" />
</cfif>

Answer 1

This happens when source is a single file rather than a comma separated list of files. I'm guessing that if it's a single file is is expecting to extract some pages rather than add.

Answer 2

I tried the following on my coldfusion 9 machine and it worked just fine:
<cfset strPath = GetDirectoryFromPath(GetCurrentTemplatePath()) />
<Cfset pdflist = arrayNew(1)>
<Cfset pdflist[1] = "#strPath#page1.pdf">
<Cfset pdflist[2] = "#strPath#page2.pdf">
<cfpdf action="merge" source="#ArrayToList(pdflist)#" destination="#strPath#merged.pdf" overwrite="yes" />
You could try to merge the pages like this and check whether you still get an error:
<cfset strPath = GetDirectoryFromPath(GetCurrentTemplatePath()) />
<Cfset pdflist = arrayNew(1)>
<Cfset pdflist[1] = "#strPath#page1.pdf">
<Cfset pdflist[2] = "#strPath#page2.pdf">
<cfpdf action="merge" destination="#strPath#merged.pdf" overwrite="yes">
<Cfloop from=1 to="#arraylen(pdflist)#" index="x">
<cfpdfparam source="#pdfList[x]#">
</cfloop>
</cfpdf>