Error creating RSS feed using CFFeed: value should be a String - coldfusion

Question

I'm trying to create an RSS feed from data in database using cffeed in ColdFusion. But when I try to run it, I get an error on line 24 (which is the cffeed line):
Detail: value should be a String
Message: Exception while creating feed.
Here is the code:
<cfquery name="messages" datasource="showcase_Uk">
select * from t_items where pid = 2 and spid = 45 ORDER BY uploadDate DESC
</cfquery>
<cfset myStruct = StructNew() />
<cfset mystruct.link = "http://showcase.com" />
<cfset myStruct.title = "Examples" />
<cfset mystruct.description = "Examples from UK Showcase" />
<cfset mystruct.pubDate = Now() />
<cfset mystruct.version = "rss_2.0" />
<cfset myStruct.item = ArrayNew(1) />
<cfloop query="messages">
<cfset myStruct.item[currentRow] = StructNew() />
<cfset myStruct.item[currentRow].guid = structNew() />
<cfset myStruct.item[currentRow].guid.isPermaLink="YES" />
<cfset myStruct.item[currentRow].guid.value = '#messages.id#' />
<cfset myStruct.item[currentRow].pubDate = createDate(year(#messages.uploadDate#), month(#messages.uploadDate#), day(#messages.uploadDate#)) />
<cfset myStruct.item[currentRow].title = xmlFormat(#messages.name#) />
<cfset myStruct.item[currentRow].description = StructNew() />
<cfset myStruct.item[currentRow].description.value = xmlFormat(#messages.description#)>
</cfloop>
<cffeed action="create" name="#myStruct#" overwrite="true" xmlVar="myXML">
<cfoutput>#myXML#</cfoutput>
Any help would be great.

Answer 1

I've tested the following code at http://cflive.net/, where it works well under Adobe ColdFusion. Therefore I believe that the error lies within the query data.
<!--- Your query
<cfquery name="messages" datasource="showcase_Uk">
select * from t_items where pid = 2 and spid = 45 ORDER BY uploadDate DESC
</cfquery>
--->
<!--- Building a new Query --->
<cfset messages = QueryNew("id,uploadDate,name,description")>
<cfset QueryAddRow(messages, 1)>
<cfset QuerySetCell(messages, "id", "123", 1)>
<cfset QuerySetCell(messages, "description", "a string", 1)>
<cfset QuerySetCell(messages, "name", "another string", 1)>
<cfset QuerySetCell(messages, "uploadDate", Now(), 1)>
<!--- From here on it is your code again --->
<cfset myStruct = StructNew() />
<cfset mystruct.link = "http://showcase.com" />
<cfset myStruct.title = "Examples" />
<cfset mystruct.description = "Examples from UK Showcase" />
<cfset mystruct.pubDate = Now() />
<cfset mystruct.version = "rss_2.0" />
<cfset myStruct.item = ArrayNew(1) />
<cfloop query="messages">
<cfset myStruct.item[currentRow] = StructNew() />
<cfset myStruct.item[currentRow].guid = structNew() />
<cfset myStruct.item[currentRow].guid.isPermaLink="YES" />
<cfset myStruct.item[currentRow].guid.value = '#messages.id#' />
<cfset myStruct.item[currentRow].pubDate = createDate(year(#messages.uploadDate#), month(#messages.uploadDate#), day(#messages.uploadDate#)) />
<cfset myStruct.item[currentRow].title = xmlFormat(#messages.name#) />
<cfset myStruct.item[currentRow].description = StructNew() />
<cfset myStruct.item[currentRow].description.value = xmlFormat(#messages.description#)>
</cfloop>
<cffeed action="create" name="#myStruct#" overwrite="true" xmlVar="myXML">
<!--- Show the complete xml --->
<cfoutput>#myXML#</cfoutput>
<br><br>
<cfoutput>#XMLFormat(myXML)#</cfoutput>