Hi all, I am trying to set up the Visual Editor on out CentOS 6.6 system running MediaWiki 1.24.1 installation. I have successfully set up Parsoid on a stand-along Ubuntu Trusty node (it works and retrieves/parses Wiki pages), and ensured that it works; I then checked out the Visual Editor extension (branch REL1_24) and its submodule, and configured them in LocalSettings.php: require_once( "{$IP}/extensions/VisualEditor/VisualEditor.php" ); $wgDefaultUserOptions['visualeditor-enable'] = 1; $wgHiddenPrefs[] = 'visualeditor-enable'; $wgVisualEditorParsoidURL = 'http://vdanilchenko-compute.vistaprint.net:8142'; $wgVisualEditorParsoidPrefix = 'corewiki'; I am testing it in the latest Chrome. When I view a page and click on the ‘Edit’ button, the system redirects to the ‘?veaction=edit’ link, thinks for a little while, shows the blue progress bar -- and then produced this error in the console (call stack included): ve.ce.BranchNode.js:234 Uncaught NotFoundError: Failed to execute 'insertBefore' on 'Node': The node before which the new node is to be inserted is not a child of this node. ve.ce.BranchNode.js:234 ve.ce.BranchNode.setupSlugs ve.ce.ContentBranchNode.js:248 ve.ce.ContentBranchNode.renderContents ve.ce.ContentBranchNode.js:110 ve.ce.ContentBranchNode.onSplice ve.ce.BranchNode.js:35 VeCeBranchNode ve.ce.ContentBranchNode.js:20 VeCeContentBranchNode ve.ce.ParagraphNode.js:18 VeCeParagraphNode oojs.jquery.js:868 oo.Factory.create ve.ce.BranchNode.js:168 ve.ce.BranchNode.onSplice ve.ce.BranchNode.js:35 VeCeBranchNode ve.ce.DivNode.js:18 VeCeDivNode oojs.jquery.js:868 oo.Factory.create ve.ce.BranchNode.js:168 ve.ce.BranchNode.onSplice ve.ce.BranchNode.js:35 VeCeBranchNode ve.ce.DocumentNode.js:19 VeCeDocumentNode ve.ce.Document.js:19 VeCeDocument ve.ce.Surface.js:30 VeCeSurface ve.ui.Surface.js:43 VeUiSurface ve.ui.DesktopSurface.js:20 VeUiDesktopSurface ve.init.Target.js:185 ve.init.Target.createSurface ve.init.mw.Target.js:1325 (anonymous function) This seems to refer to the error in the following code section in VisualEditor/lib/ve/src/ce/ve.ce.BranchNode.js: for ( i in this.getModel().slugPositions ) { slugNode = doc.importNode( slugTemplate, true ); if ( this.children[i] ) { this.$element[0].insertBefore( slugNode, this.children[i].$element[0] ); } else { this.$element[0].appendChild( slugNode ); } this.slugNodes[i] = slugNode; } So I tried dumping the nodes involved – this.$element[0] and slugNode – to the console (immediately preceding the error message of course), and got the following: 0th child: <p><span class="hideshow1 ve-ce-textStyleAnnotation ve-ce-spanAnnotation"><span class="" id="hidemetextWTRaSupplierDocsZ" about="#mwt7" typeof="mw:Transclusion" data-parsoid="{“stx”:”html”,”dsr”:[2025,2111,null,null],”pi”:[[{“k”:”hide id”,”named”:true,”spc”:[““,”“,”“,”“]},{“k”:”text id”,”named”:true,”spc”:[““,”“,”“,”“]}]]}" data-mw="{“parts”:[{“template”:{“target”:{“wt”:”Collapsible js”,”href”:”./Template:Collapsible_js”},”params”:{“hide id”:{“wt”:”hidemeWTRaSupplierDocsZ”},”text id”:{“wt”:”hidemetextWTRaSupplierDocsZ”}},”i”:0}}]}">show</span><span data-parsoid="{“src”:”<javascript>\n(function($){\n// $('#hidemeWTRaSupplierDocsZ').css('display','none');\n$('#hidemetextWTRaSupplierDocsZ').text('show').click(function() {\n $('#hidemeWTRaSupplierDocsZ').slideToggle('fast', function(){\n\n if ($('#hidemeWTRaSupplierDocsZ').is(':hidden')) {\n $('#hidemetextWTRaSupplierDocsZ').text('show');\n } else {\n $('#hidemetextWTRaSupplierDocsZ').text('hide');\n }\n\n });\n})\n})(window.jQuery);\n</javascript>“}" typeof="mw:Extension/javascript" data-mw="{“name”:”javascript”,”attrs”:{},”body”:{“extsrc”:”\n(function($){\n// $('#hidemeWTRaSupplierDocsZ').css('display','none');\n$('#hidemetextWTRaSupplierDocsZ').text('show').click(function() {\n $('#hidemeWTRaSupplierDocsZ').slideToggle('fast', function(){\n\n if ($('#hidemeWTRaSupplierDocsZ').is(':hidden')) {\n $('#hidemetextWTRaSupplierDocsZ').text('show');\n } else {\n $('#hidemetextWTRaSupplierDocsZ').text('hide');\n }\n\n });\n})\n})(window.jQuery);\n”}}" about="#mwt7"> </span></span><b class="ve-ce-textStyleAnnotation ve-ce-boldAnnotation">WTR and Supplier Documents</b></p> Slug: <span class="ve-ce-branchNode-slug ve-ce-branchNode-inlineSlug"></span> Aaaand at this point, I am stuck. These seem to be the DOM nodes dynamically generated by the Visual Editor, and I have no idea where to go from here. I am getting this with all the extensions disabled. It happens whether client debugger and resource loader debug mode are on or off. Does anyone have any ideas on what might be going wrong? Thanks!