Theses lines were seen in production

INFO: Unknown feature(s) in extern &libs=: [core%253Arpc]
26 mars 2013 18:29:45 org.apache.shindig.gadgets.render.RenderingGadgetRewriter injectFeatureLibraries

INFO: Failed to update http://www.etu.univ-bordeauxsegalen.fr/plugins/gadgets/resources/css/gadget-rss.css. Using cached version.
26 mars 2013 18:21:47 org.apache.shindig.gadgets.render.RenderingGadgetRewriter injectFeatureLibraries

INFO: Unknown feature(s) in extern &libs=: [core%253Arpc]
26 mars 2013 18:19:19 org.apache.shindig.gadgets.AbstractSpecFactory$SpecUpdater run

INFO: Unknown feature(s) in extern &libs=: [core%253Arpc]
Exception in thread "pool-1-thread-294" java.lang.RuntimeException: java.net.MalformedURLException: The cocoon protocol can not be used outside an environment.
at org.ametys.plugins.gadgets.AmetysGadgetSpecFactory.fetchFromNetwork(AmetysGadgetSpecFactory.java:82)
at org.ametys.plugins.gadgets.AmetysGadgetSpecFactory.fetchFromNetwork(AmetysGadgetSpecFactory.java:40)
at org.apache.shindig.gadgets.AbstractSpecFactory$SpecUpdater.run(AbstractSpecFactory.java:215)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.MalformedURLException: The cocoon protocol can not be used outside an environment.
at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:120)
at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:65)
at org.apache.excalibur.source.impl.SourceResolverImpl.resolveURI(SourceResolverImpl.java:208)
at org.apache.excalibur.source.impl.SourceResolverImpl.resolveURI(SourceResolverImpl.java:152)
at org.ametys.plugins.gadgets.AmetysGadgetSpecFactory.fetchFromNetwork(AmetysGadgetSpecFactory.java:69)
... 5 more