thank’s Sebastian
I am losted 
if the inspector is in the backend … I do not see it because the backend interface has not been builded in the html page … I tried to explain the problem here No menu for editing in Neos 2.0.0 beta 5?
the response in the data/logs/exceptions
Uncaught exception #1328879703 in line 40 of /var/www/vhosts/art-et-sol.com/httpdocs/Neos200b5/Packages/Framework/TYPO3.Flow/Classes/TYPO3/Flow/I18n/AbstractXmlParser.php: The path “” does not point to an existing and accessible XML file.