Reenable the Web Content portlet in 5.2.x

[Giuseppe Cinque, módosítva 15 év-val korábban]

Hello,
in http://www.liferay.com/web/jferrer/blog/-/blogs/1791601
is recommended to
1) Reenable the Web Content portlet back by editing liferay-display(-ext).xml
But when I export lar page with Web Content portlet I have an exception, see
http://www.liferay.com/web/guest/community/forums/-/message_boards/message/2117303
This because when I export a lar one blank page (5.2.x) I have this manifest.xml
<?xml version="1.0" encoding="UTF-8"?>
<root>
    <header build-number="5200" export-date="lun, 09 feb 2009 09:53:00 +0000" type="layout-set" group-id="13601" private-layout="false" theme-id="classic" color-scheme-id="01"/>
    <layouts>
        <layout layout-id="1" path="/groups/13601/layouts/1/layout.xml"/>
    </layouts>
    <portlets>
        <portlet portlet-id="15" layout-id="1" path="/groups/13601/portlets/15/portlet.xml"/>
        <portlet portlet-id="25" layout-id="1" path="/groups/13601/portlets/25/13604/portlet.xml"/>
    </portlets>
</root>
There are always two portlet
1. id = 15 (journal = web content)
2. id = 25 (polls)
Why?
If I add also Web Content portlet I have two
/groups/13601/portlets/15/portlet.xml
/groups/13601/portlets/15/portlet.xml
for this reason I have the exception explained above.
Some idea to resolve this problem?
Regards