[xwiki-users] ACE Editor cannot be loaded after migration to version 7.4.2

Dear all, a view weeks ago we updated our xwiki application from version 6.2 to version 7.4, but since upgrading the wiki we encountered several problems with the ACE editor. The problems causes unexpected behaviors (loading the article content in the ace editor will never end due to javascript errors) when editing articles or create new ones. The root problem seems to be the Xuake script (http://baseurl/xwiki/bin/jsx/XWiki/Xuake?language=de&docVersion=1.1) tries to intialize the ace library, but I guess something is missing. Below is listed the console output when running the create new page wizzard in the xwiki. HTML1406: Invalid tag start: "<?". Question marks should not start tags. WebHome (1,2) ------------------------------------------------------------------------------------------------------- SCRIPT1010: Expected identifier WebHome (1,9) -------------------------------------------------------------------------------------------------------- SCRIPT5009: 'ace' is undefined Xuake (143,7) ------------------------------------------------------------------------------------------------------- SCRIPT5007: Unable to get property 'noConflict' of undefined or null reference WebHome (81,54) --------------------------------------------------------------------------------------------------------- SEC7115: :visited and :link styles can only differ by color. Some styles were not applied to :visited. WebHome --------------------------------------------------------------------------------------------------------- SCRIPT1002: Syntax error text.js (1,1) -------------------------------------------------------------------------------------------------------- SCRIPT5007: Unable to get property 'normalize' of undefined or null reference require.min.js (20,263) --------------------------------------------------------------------------------------------------------- SCRIPT5022: Load timeout for modules: text!ace/css/editor.css_unnormalized2,jsTree,text!ace/theme/textmate.css_unnormalized3 http://requirejs.org/docs/errors.html#timeout require.min.js (8,137) --------------------------------------------------------------------------------------------------------- SCRIPT438: Object doesn't support property or method 'getLayout' prototype.js (11,59324) --------------------------------------------------------------------------------------------------------- SCRIPT438: Object doesn't support property or method 'getLayout' prototype.js (11,59324) --------------------------------------------------------------------------------------------------------- SCRIPT438: Object doesn't support property or method 'getLayout' prototype.js (11,59324) --------------------------------------------------------------------------------------------------------- SCRIPT438: Object doesn't support property or method 'getLayout' prototype.js (11,59324) -------------------------------------------------------------------------------------------------------- Hopefully somebody has an idea what is missing and can give me some help with that issue. Let me thanks you for your investigations in advice. Mit freundlichen Grüßen / Kind regards Sebastian Schabbach