PDF aggregation

Now that i have recovered my rights (pfew) i still have a problem. I installed the pdf agregator which used to work. Now, all i get is an error 401 (login necessary) when the script is trying to get the pages. My best bet was that i set rights to pages that i could not access, but i get the same error as superadmin. :/ Precisely: java.io.IOException: Server returned HTTP response code: 401 for URL: http://127.0.0.1/xwiki/bin/login/XWiki/XWikiLogin;jsessionid=62C4E232B1BB14F... <http://srv-ninsight-01/xwiki/bin/login/XWiki/XWikiLogin;jsessionid=62C4E232B1BB14FC68411E7DF2CEC72F> Any idea?