I use InstalledExtensionScriptService class to retrieve a list of installed extensions. I would like automatically upgrade RTWysiwyg (or any other) extension if the current version less than the version in my jar file (hardcoded). When I try to use ExtensionManagerScriptService class to uninstall existing extension and then install the new one XWiki freezes. I studied xwiki docs and think it can be a conflict. What should I do? -- View this message in context: http://xwiki.475771.n2.nabble.com/Is-it-possible-to-upgrade-xwiki-extension… Sent from the XWiki- Dev mailing list archive at Nabble.com.