TagCloud module AJAX problem

Hi all,

I've been testing Tag Cloud module and I'm trying develop my own module
based in Tag Cloud module. It works fine in authoring area, but when I try
to see it in live area I see nothing. I checked the Javascript Console and I
found this:
Error: uncaught exception: [Exception... "Component returned failure code:
0x80004005 (NS_ERROR_FAILURE) [nsIXMLHttpRequest.send]"  nsresult:
"0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame ::
http://myipaddress:8888/modules/dojo/dojo/dojo.js :: anonymous :: line 16" 
data: no]

I was searching about this in Google and it seems an Ajax problem, mybe in
DOJO module... I'll keep looking for a solution, but It will be nice if
anyone could help me.

Extra information: 
 - I included necesary contribution modules
 - I included in head section:
        <i:include src="cocoon://modules/javascript/head.xml"
strip-root="true"/>
        <script type="text/javascript" src="/modules/dojo/dojo/dojo.js"
           djConfig="parseOnLoad: true, bindEncoding: 'utf-8', locale:
'{$language}'"/>
        <script type="text/javascript"
src="/modules/tagcloud/javascript/TagCloud.js"/>

 - I included in body section:
        <div dojoType="lenya.tagcloud.TagCloud" pub="'{$publication-id}'"
area="'{$area}'" lang="'{$language}'"><xsl:comment/></div>

 - In live area I see this:
        <div area="'live'" pub="'mypublication'"
dojotype="lenya.tagcloud.TagCloud" lang="'es'"><!----></div>
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