diff --git a/customize.dist/ckeditor-config.js b/customize.dist/ckeditor-config.js
index 019014299..a39616e6e 100644
--- a/customize.dist/ckeditor-config.js
+++ b/customize.dist/ckeditor-config.js
@@ -27,7 +27,7 @@ CKEDITOR.editorConfig = function( config ) {
 
     config.font_defaultLabel = 'Arial';
     config.fontSize_defaultLabel = '16';
-    config.contentsCss = '/customize/ckeditor-contents.css';
+    config.contentsCss = '/customize/ckeditor-contents.css?' + CKEDITOR.CRYPTPAD_URLARGS;
 
     config.keystrokes = [
         [ CKEDITOR.ALT + 121 /*F10*/, 'toolbarFocus' ],
@@ -55,3 +55,17 @@ CKEDITOR.editorConfig = function( config ) {
     //skin: 'moono-dark,/pad/themes/moono-dark/'
     //skin: 'office2013,/pad/themes/office2013/'
 };
+
+(function () {
+    // These are overrides inside of ckeditor which add ?ver= to the CSS files so that
+    // every part of ckeditor will get in the browser cache.
+    var fix = function (x) {
+        if (x.map) { return x.map(fix); }
+        console.log('> ' + x);
+        return (/\/bower_components\/.*\.css$/.test(x)) ? (x + '?ver=' + CKEDITOR.timestamp) : x;
+    };
+    CKEDITOR.tools._buildStyleHtml = CKEDITOR.tools.buildStyleHtml;
+    CKEDITOR.document._appendStyleSheet = CKEDITOR.document.appendStyleSheet;
+    CKEDITOR.tools.buildStyleHtml = function (x) { return CKEDITOR.tools._buildStyleHtml(fix(x)); };
+    CKEDITOR.document.appendStyleSheet = function (x) { return CKEDITOR.document._appendStyleSheet(fix(x)); };
+}());
\ No newline at end of file
diff --git a/www/common/boot2.js b/www/common/boot2.js
index b24ce38af..487eb8ae6 100644
--- a/www/common/boot2.js
+++ b/www/common/boot2.js
@@ -2,7 +2,7 @@
 define([
     '/common/requireconfig.js'
 ], function (RequireConfig) {
-    require.config(RequireConfig);
+    require.config(RequireConfig());
 
     // most of CryptPad breaks if you don't support isArray
     if (!Array.isArray) {
diff --git a/www/common/requireconfig.js b/www/common/requireconfig.js
index caa0da868..85258ea8b 100644
--- a/www/common/requireconfig.js
+++ b/www/common/requireconfig.js
@@ -21,5 +21,7 @@ define([
         }
     };
     Object.keys(ApiConfig.requireConf).forEach(function (k) { out[k] = ApiConfig.requireConf[k]; });
-    return out;
+    return function () {
+        return JSON.parse(JSON.stringify(out));
+    };
 });
diff --git a/www/common/sframe-boot.js b/www/common/sframe-boot.js
index 5206b3e68..4abac6e37 100644
--- a/www/common/sframe-boot.js
+++ b/www/common/sframe-boot.js
@@ -2,20 +2,18 @@
 // Note that this file is meant to be executed only inside of a sandbox iframe.
 ;(function () {
 var req = JSON.parse(decodeURIComponent(window.location.hash.substring(1)));
-if (req.cfg) { require.config(req.cfg); }
+req.cfg = req.cfg || {};
 if (req.pfx) {
-    require.config({
-        onNodeCreated: function (node, config, module, path) {
-            node.setAttribute('src', req.pfx + node.getAttribute('src'));
-        }
-    });
+    req.cfg.onNodeCreated = function (node, config, module, path) {
+        node.setAttribute('src', req.pfx + node.getAttribute('src'));
+    };
 }
+require.config(req.cfg);
 if (req.req) { require(req.req, function () { }); }
 window.addEventListener('message', function (msg) {
     var data = JSON.parse(msg.data);
     if (data.q !== 'INIT') { return; }
     msg.source.postMessage(JSON.stringify({ txid: data.txid, content: 'OK' }), '*');
-    if (data.content && data.content.requireConf) { require.config(data.content.requireConf); }
     require(['/common/sframe-boot2.js'], function () { });
 });
 }());
\ No newline at end of file
diff --git a/www/common/sframe-boot2.js b/www/common/sframe-boot2.js
index 45e32a2ca..38395a21f 100644
--- a/www/common/sframe-boot2.js
+++ b/www/common/sframe-boot2.js
@@ -1,7 +1,7 @@
 // This is stage 1, it can be changed but you must bump the version of the project.
 // Note: This must only be loaded from inside of a sandbox-iframe.
 define(['/common/requireconfig.js'], function (RequireConfig) {
-    require.config(RequireConfig);
+    require.config(RequireConfig());
 
     // most of CryptPad breaks if you don't support isArray
     if (!Array.isArray) {
diff --git a/www/common/sframe-channel.js b/www/common/sframe-channel.js
index dcf5e1abc..bce9cfdd3 100644
--- a/www/common/sframe-channel.js
+++ b/www/common/sframe-channel.js
@@ -145,7 +145,7 @@ define([
                 intr = setInterval(function () {
                     ow.postMessage(JSON.stringify({
                         txid: txid,
-                        content: { requireConf: RequireConfig },
+                        content: { requireConf: RequireConfig() },
                         q: 'INIT'
                     }), '*');
                 }, 1);
diff --git a/www/common/toolbar3.js b/www/common/toolbar3.js
index 9ded9b136..e254dbb55 100644
--- a/www/common/toolbar3.js
+++ b/www/common/toolbar3.js
@@ -606,7 +606,7 @@ define([
             title: buttonTitle,
             'class': "cryptpad-logo"
         }).append($('<img>', {
-            src: '/customize/images/logo_white.png'
+            src: '/customize/images/logo_white.png?' + ApiConfig.requireConf.urlArgs
         }));
         var onClick = function (e) {
             e.preventDefault();
diff --git a/www/pad2/inner.html b/www/pad2/inner.html
index 2d5efe5b4..23aa8b764 100644
--- a/www/pad2/inner.html
+++ b/www/pad2/inner.html
@@ -2,11 +2,7 @@
 <html class="cp pad">
 <head>
     <meta content="text/html; charset=utf-8" http-equiv="content-type"/>
-    <link rel="stylesheet" href="/bower_components/components-font-awesome/css/font-awesome.min.css">
-    <script src="/bower_components/jquery/dist/jquery.min.js"></script>
-    <link rel="stylesheet" href="/bower_components/bootstrap/dist/css/bootstrap.min.css">
     <script async data-bootload="/pad2/main.js" data-main="/common/sframe-boot.js?ver=1.0" src="/bower_components/requirejs/require.js?ver=2.3.5"></script>
-    <script src="/bower_components/ckeditor/ckeditor.js"></script>
     <style>
     html, body {
         margin: 0px;
diff --git a/www/pad2/main.js b/www/pad2/main.js
index d7d32aec6..f0e1e063b 100644
--- a/www/pad2/main.js
+++ b/www/pad2/main.js
@@ -1,4 +1,22 @@
-console.log('one');
+require(['/api/config'], function (ApiConfig) {
+    // see ckeditor_base.js getUrl()
+    window.CKEDITOR_GETURL = function (resource) {
+        if (resource.indexOf( '/' ) === 0) {
+            resource = window.CKEDITOR.basePath.replace(/\/bower_components\/.*/, '') + resource;
+        } else if (resource.indexOf(':/') === -1) {
+            resource = window.CKEDITOR.basePath + resource;
+        }
+        if (resource[resource.length - 1] !== '/' && resource.indexOf('ver=') === -1) {
+            var args = ApiConfig.requireConf.urlArgs;
+            if (resource.indexOf('/bower_components/') !== -1) {
+                args = 'ver=' + window.CKEDITOR.timestamp;
+            }
+            resource += (resource.indexOf('?') >= 0 ? '&' : '?') + args;
+        }
+        return resource;
+    };
+    require(['/bower_components/ckeditor/ckeditor.js']);
+});
 define([
     'jquery',
     '/bower_components/chainpad-crypto/crypto.js',
@@ -14,15 +32,17 @@ define([
     '/pad/links.js',
     '/bower_components/nthen/index.js',
     '/common/sframe-common.js',
+    '/api/config',
 
     '/bower_components/file-saver/FileSaver.min.js',
     '/bower_components/diff-dom/diffDOM.js',
 
+    'css!/bower_components/bootstrap/dist/css/bootstrap.min.css',
     'css!/bower_components/components-font-awesome/css/font-awesome.min.css',
     'less!/customize/src/less/cryptpad.less',
     'less!/customize/src/less/toolbar.less'
 ], function ($, Crypto, Hyperjson,
-    Toolbar, Cursor, JsonOT, TypingTest, JSONSortify, TextPatcher, Cryptpad, Cryptget, Links, nThen, SFCommon) {
+    Toolbar, Cursor, JsonOT, TypingTest, JSONSortify, TextPatcher, Cryptpad, Cryptget, Links, nThen, SFCommon, ApiConfig) {
     var saveAs = window.saveAs;
     var Messages = Cryptpad.Messages;
     var DiffDom = window.diffDOM;
@@ -725,6 +745,8 @@ define([
             } else {
                 $('meta[name=viewport]').attr('content', 'width=device-width, initial-scale=1.0, user-scalable=yes');
             }
+            // Used in ckeditor-config.js
+            Ckeditor.CRYPTPAD_URLARGS = ApiConfig.requireConf.urlArgs;
             editor = Ckeditor.replace('editor1', {
                 customConfig: '/customize/ckeditor-config.js',
             });
diff --git a/www/pad2/outer.js b/www/pad2/outer.js
index 452e0bf78..5f603eab6 100644
--- a/www/pad2/outer.js
+++ b/www/pad2/outer.js
@@ -4,14 +4,17 @@ define([
     '/common/requireconfig.js',
     '/common/cryptget.js'
 ], function (ApiConfig, $, RequireConfig, Cryptget) {
+    var requireConfig = RequireConfig();
     $(function () {
         var req = {
-            cfg: RequireConfig,
+            cfg: requireConfig,
             req: [ '/common/loading.js' ],
             pfx: window.location.origin
         };
+        window.rc = requireConfig;
+        window.apiconf = ApiConfig;
         $('#sbox-iframe').attr('src',
-            ApiConfig.httpSafeOrigin + '/pad2/inner.html?' + ApiConfig.requireConf.urlArgs +
+            ApiConfig.httpSafeOrigin + '/pad2/inner.html?' + requireConfig.urlArgs +
                 '#' + encodeURIComponent(JSON.stringify(req)));
     });
     require([
@@ -21,7 +24,6 @@ define([
         '/common/cryptpad-common.js',
         '/bower_components/chainpad-crypto/crypto.js'
     ], function (SFrameChannel, CpNfOuter, nThen, Cryptpad, Crypto) {
-        console.log('xxx');
         var sframeChan;
         var hashes;
         var secret;