How does cfoutput instantiate and destroy objects?

I'm working on an old piece of code that watches a directory = checks the files in it and then renames the file to one other parts of the system recognise based on the contents of the file
Now having rationlised this code significantly making use of CFC's I'm having problems in the way in which the code rename's the file -It should rename it based on a string it may find in the doc otherwise it leaves it alone - However at the moment it randomly assigns it a value that is not in the file although I think its holding on to details from another file but I don't know how - I'm running Coldusion 9 and the production server is running CF8- I don't seen to have the problem on my machine but do on the production box
Any help would be deeply appreciated
Thanks

OK thanks - that helps a bit - I'm not yet a confident ColdFusion programmer - I've only been using it for the last month - My background is Java - as <cfoutput> is looping over the <cfdirectory> query - I amtrying to understand how everything is scoped within the loop
This is the actual code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Pragma" content="no-cache">
<title>Parse PDFs</title>

<meta http-equiv="refresh" content="120" >
<cfset dumpPDFDir = configFile.getAttributeFromConfigFile("dumpPDFDir")>
<cfset deliverDir = configFile.getAttributeFromConfigFile("deliverDir")>

<a href="au_parse_pdfs.cfm" target="_blank">Parse PDFs</a> - Last Run <cfoutput>#dateformat(now(),"ddd-dd")#-#timeformat(now(),"HH:mm")#</cfoutput> 
<cfdirectory action="list" directory="#dumpPDFDir#" name="TheList" filter="*.pdf" sort="dateLastModified" recurse="no">
<cfobject component="global.deliverySystem.PDFUtils" name="PDFUtils">
<cfoutput query="TheList">
 <cfset includeFile="True"/>
 <cfif find("INVOICE", ucase(TheList.name[TheList.currentRow]), 0) neq 0>
 <cfset includeFile="False"/>
 </cfif>
 <cfif find("HCP", ucase(TheList.name[TheList.currentRow]),0) neq 0>
 <cfset includeFile="True"/>
 </cfif>
 <cfif TheList.Type[TheList.currentRow] eq "File"
 
 AND find("RECEIPT", ucase(TheList.name[TheList.currentRow]), 0) eq 0
 AND #includeFile#
 AND find("DISPATCH MANIFEST", ucase(TheList.name[TheList.currentRow]), 0) eq 0
 <cfset TheFile = PDFUtils.getPDFAsXml(dumpPDFDir="#dumpPDFDir#",fileName="#TheList.name[TheList.currentRow ]#")/>
 <cfset isValidFile = PDFUtils.isValidFile(file="#TheFile#")/>
 
 <cfif isValidFile>
 <cfset fileName =""/>
 <cfset EnviroType = "">
 <cfif find("~", TheFile)>
 <cfset TheFirst = find("~",TheFile)>
 <cfset TheSecond = find("~", TheFile, TheFirst+1)>
 <cfset TheThird = find("~", TheFile, TheSecond+1)>
 <cfif TheThird gt TheSecond and TheSecond gt TheFirst and TheThird - TheFirst lt 40>
 <cfset FirstString = mid(TheFile,TheFirst+1,TheSecond-TheFirst-1)>
 <cfset SecondString = mid(TheFile,TheSecond+1,TheThird-TheSecond-1)>
 name=#name# #TheFirst# / #TheSecond# / #TheThird# ***** #TheSecond - TheFirst# / #TheThird - TheSecond# ***** FirstString=*#FirstString#* / SecondString=*#SecondString#* / mmm#left(name,len(name)-4)#mmm 
 <cfif isnumeric(FirstString) and isnumeric(SecondString) and len(FirstString) gt 3 and (len(SecondString) gt 0 and len(SecondString) lt 30)>
 <cfif SecondString eq "8">
 <cfset EnviroType = PDFUtils.determineEnviroTypeFromProductType(TheFile="#TheFile#",
 startPoint="#TheFirst#")/>
 <cfelse>
 <cfset EnviroType = "$AUT$$">
 </cfif>
 </cfif>
 <cfset fileName = "#dumpPDFDir#\#trim(FirstString)# #trim(SecondString)##EnviroType#.pdf"/>
 </cfif>
 </cfif>
 <cfdump var="#fileName#"/>
 <cfif fileName NEQ "">
 <cffile action="rename" source="#dumpPDFDir#\#left(name,len(name)-4)#.pdf" destination="#fileName#">
 <cfif directoryExists(deliverDir)>
 <cffile action="copy" source="#fileName#" destination="#deliverDir#/monitoringDir"/>
 
 <cfelse>
 Unable to access directory=#deliverDir# 
 </cfif>
 <cfelse>
 name=#name# - not matched 
 </cfif>
 <cfelse>
 name=#name# - not found 
 </cfif>
 <cfelse>
 name=#name# - excluded 
 </cfif>
 <cfset StructClear(TheFile)/>
 <cfset fileName = ""/>
 <cfset FirstString = ""/>
 <cfset SecondString = ""/>
 <cfset EnviroType = "">
 <cfset TheFirst = "">
 <cfset TheSecond = "">
 <cfset TheThird = "">
</cfoutput>
<cfset TheList = ""/>
</body>
</html>
With the function calls to the CFC's being:
<cffunction name="getPDFAsXml" access="public" returnType="String" >
 <cfargument name="dumpPDFDir" type="String" required="true">
 <cfargument name="fileName" type="String" required="true" >
 <cfinvoke component="global.common.config.config"
 method="getAttributeFromConfigFile"
 configAttribute="ddxDir"
 returnvariable="ddxDir"/>
 <cfinvoke component="global.common.config.config"
 method="getAttributeFromConfigFile"
 configAttribute="xmlDir"
 returnvariable="xmlDir"/>
 <cfset inputStruct=StructNew()>
 <cfset inputStruct.doc1="#dumpPDFDir#/#fileName#">
 <cfset outputType="xml"/>
 <cfset outputStruct=StructNew()>
 <cfset outputStruct.Out1= xmlDir & "/" & Replace("readPDF.ddx",".ddx","")&"."&outputType/>
 <cfpdf action="processddx" ddxfile="#ddxDir#/readPDF.ddx" inputfiles="#inputStruct#" outputfiles="#outputStruct#" name="ddxVar">
 
 <cffile variable="xmlOutput"
 file="#outputStruct.Out1#"
 action="read" charset="utf-8" />
 <cfset parsedFile = XmlParse(xmlOutput)/>
 <cfreturn parsedFile>
 </cffunction>
 <cffunction name="determineEnviroTypeFromProductType" access="public" returnType="String">
 <cfargument name="TheFile" type="Any" required="true"/>
 <cfargument name="startPoint" type="Any" required="true"/>
 <cfset EnviroType = "$AUT$">
 <cfif find("Referred to RPS", left(TheFile, startPoint)) OR find("Certificate", left(TheFile, startPoint)) OR find("RPS Review", left(TheFile, startPoint))>
 <cfif find("Referred to RPS", left(TheFile, startPoint))>
 <cfset EnviroType = EnviroType & "Referred to RPS$">
 </cfif>
 <cfif find("Certificate", left(TheFile, startPoint))>
 <cfset EnviroType = EnviroType & "Certificate$">
 </cfif>
 <cfif find("RPS Review", left(TheFile, startPoint))>
 <cfset EnviroType = EnviroType & "RPS Review$">
 </cfif>
 <cfelse>
 <cfset EnviroType = EnviroType & "$">
 </cfif>
 <cfreturn EnviroType/>
 </cffunction>
As I said before - this works absolutely fine on my CF9 server but not on the CF8 production server

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