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After updating from 3.7.1 to 3.9.1 I am seeing issues with the editor within WordPress. In the environment that I have not upgraded, I am able to add content blocks and edit the block type flawlessly. I have disabled all plugins and still see the issue.

In 3.9.1, I see this error on page load:

Deprecated TinyMCE API call: <target>.onInit.add(..)

After clicking +Add Content Block:

TypeError: r is undefined (/wp-includes/js/tinymce/wp-tinymce.php?c=1&ver=4021-20140423)

After selecting the block type:

TypeError: tinyMCE.get(...) is null

I assume the issue is derived from this:

tinymce.create('tinymce.plugins.editor_toolkit', {
    init : function(ed, url) {
        var VK = {
            DELETE: 46, BACKSPACE: 8, ENTER: 13, TAB: 9, SPACEBAR: 32, UP: 38, DOWN: 40, LEFT: 37, RIGHT: 39,
            modifierPressed: function (e) {
                return e.shiftKey || e.ctrlKey || e.altKey;
            }
        };
        function scrollToThisNode(node, padding) {
            vp = ed.dom.getViewPort( ed.getWin() )
            y = ed.dom.getPos(node).y;
            if (y < vp.y || y + padding > vp.y + vp.h) {
                ed.getWin().scrollTo(0, y < vp.y ? y : y - vp.h + padding);
            }
        }
        ed.onInit.add(function(ed) {
            ed.dom.addClass(ed.getBody(), 'editor-toolkit');

            // Last-ditch effort to structure content
            $('#post').submit(function(){
                $( ed.getBody() ).children('p').each(function(){
                    $(this).replaceWith('<div><p>' + $(this).html() + '</p></div>');
                });
                return true;
            });

        });
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  • The TinyMCE editor was updated to 4.0 in WordPress 3.9. Try clearing your browser cache. :) Commented Aug 14, 2014 at 19:51
  • Well that would explain it. The tinyMCE is hardcoded in by a previous developer. It must not like the script I added above. I did clear cache - same issue. Commented Aug 14, 2014 at 20:05
  • I did manage to fix the deprecated calls. I now see an error: TypeError: r is undefined Commented Aug 15, 2014 at 12:21

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