diff --git a/.travis.yml b/.travis.yml
index 1fbc4dcc..af738bb4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,4 +3,5 @@ node_js:
     - 6   # node v6, to match jenkins
 install:
     - npm install
+    - (cd node_modules/matrix-js-sdk && npm install)
     - (cd node_modules/matrix-react-sdk && npm run build)
diff --git a/README.md b/README.md
index f7754348..ba59ea26 100644
--- a/README.md
+++ b/README.md
@@ -57,9 +57,13 @@ to build.
 1. Switch to the vector-web directory: `cd vector-web`
 1. Install the prerequisites: `npm install`
 1. If you are using the `develop` branch of vector-web, you will probably need
-   to rebuild one of the dependencies, due to
-   https://github.com/npm/npm/issues/3055: `(cd node_modules/matrix-react-sdk
-   && npm install)`
+   to rebuild some of the dependencies, due to
+   https://github.com/npm/npm/issues/3055:
+
+   ```
+   (cd node_modules/matrix-js-sdk && npm install)
+   (cd node_modules/matrix-react-sdk && npm install)
+   ```
 1. Configure the app by copying `config.sample.json` to `config.json` and
    modifying it (see below for details)
 1. `npm run dist` to build a tarball to deploy. Untaring this file will give
@@ -241,10 +245,10 @@ Finally, build and start Riot itself:
    disables caching, so do NOT use it in production.
 1. Open http://127.0.0.1:8080/ in your browser to see your newly built Riot.
 
-When you make changes to `matrix-react-sdk`, you will need to run `npm run
-build` in the relevant directory. You can do this automatically by instead
-running `npm start` in the directory, to start a development builder which
-will watch for changes to the files and rebuild automatically.
+When you make changes to `matrix-react-sdk` or `matrix-js-sdk`, you will need
+to run `npm run build` in the relevant directory. You can do this automatically
+by instead running `npm start` in the directory, to start a development builder
+which will watch for changes to the files and rebuild automatically.
 
 If you add or remove any components from the Riot skin, you will need to rebuild
 the skin's index by running, `npm run reskindex`.
diff --git a/electron/src/electron-main.js b/electron/src/electron-main.js
index 2b135a03..675640a5 100644
--- a/electron/src/electron-main.js
+++ b/electron/src/electron-main.js
@@ -148,6 +148,8 @@ process.on('uncaughtException', function (error) {
 
 electron.ipcMain.on('install_update', installUpdate);
 
+electron.app.commandLine.appendSwitch('--enable-usermedia-screen-capturing');
+
 electron.app.on('ready', () => {
     if (vectorConfig.update_base_url) {
         console.log("Starting auto update with base URL: " + vectorConfig.update_base_url);
diff --git a/electron/src/squirrelhooks.js b/electron/src/squirrelhooks.js
index 295ef5cf..ca0983b6 100644
--- a/electron/src/squirrelhooks.js
+++ b/electron/src/squirrelhooks.js
@@ -3,7 +3,12 @@ const spawn = require('child_process').spawn;
 const app = require('electron').app;
 
 function run_update_exe(args, done) {
-    const updateExe = path.resolve(path.dirname(process.execPath), 'Update.exe');
+    // Invokes Squirrel's Update.exe which will do things for us like create shortcuts
+    // Note that there's an Update.exe in the app-x.x.x directory and one in the parent
+    // directory: we need to run the one in the parent directory, because it discovers
+    // information about the app by inspecting the directory it's run from.
+    const updateExe = path.resolve(path.dirname(process.execPath), '..', 'Update.exe');
+    console.log('Spawning `%s` with args `%s`', updateExe, args);
     spawn(updateExe, args, {
       detached: true
     }).on('close', done);
diff --git a/electron/src/vectormenu.js b/electron/src/vectormenu.js
index f4d55c15..70ed3ac3 100644
--- a/electron/src/vectormenu.js
+++ b/electron/src/vectormenu.js
@@ -72,11 +72,7 @@ const template = [
                 role: 'togglefullscreen'
             },
             {
-                label: 'Toggle Developer Tools',
-                accelerator: process.platform == 'darwin' ? 'Alt+Command+I' : 'Ctrl+Shift+I',
-                click: function(item, focusedWindow) {
-                    if (focusedWindow) focusedWindow.toggleDevTools();
-                }
+                role: 'toggledevtools'
             }
         ]
     },
diff --git a/package.json b/package.json
index 8eb562d3..1e273dfe 100644
--- a/package.json
+++ b/package.json
@@ -27,26 +27,22 @@
   "matrix-react-parent": "matrix-react-sdk",
   "scripts": {
     "reskindex": "reskindex -h src/header",
-    "build:res": "cpx \"{src/skins/vector/fonts,src/skins/vector/img}/**\" webapp/ && cpx \"{res/media,res/vector-icons}/**\" webapp/",
-    "build:config": "cpx config.json webapp/",
-    "build:emojione": "cpx \"node_modules/emojione/assets/svg/*\" webapp/emojione/svg/",
+    "build:res": "node scripts/copy-res.js",
     "build:modernizr": "modernizr -c .modernizr.json -d src/vector/modernizr.js",
     "build:css": "mkdirp build && postcss -c postcss.config.json",
     "build:compile": "babel --source-maps -d lib src",
     "build:bundle": "NODE_ENV=production webpack -p --progress",
     "build:bundle:dev": "webpack --optimize-occurence-order --progress",
     "build:electron": "npm run clean && npm run build && build -wml --ia32 --x64",
-    "build": "node scripts/babelcheck.js && npm run build:res && npm run build:config && npm run build:emojione && npm run build:css && npm run build:bundle",
-    "build:dev": "node scripts/babelcheck.js && npm run build:res && npm run build:config && npm run build:emojione && npm run build:css && npm run build:bundle:dev",
+    "build": "node scripts/babelcheck.js && npm run build:res && npm run build:css && npm run build:bundle",
+    "build:dev": "node scripts/babelcheck.js && npm run build:res && npm run build:css && npm run build:bundle:dev",
     "dist": "scripts/package.sh",
-    "start:res": "parallelshell \"cpx -w \\\"{src/skins/vector/fonts,src/skins/vector/img}/**\\\" webapp/\" \"cpx -w \\\"{res/media,res/vector-icons}/**\\\" webapp/\"",
-    "start:config": "cpx -w config.json webapp/",
-    "start:emojione": "cpx \"node_modules/emojione/assets/svg/*\" webapp/emojione/svg/ -w",
+    "start:res": "node scripts/copy-res.js -w",
     "start:js": "webpack-dev-server -w --progress",
     "start:js:prod": "NODE_ENV=production webpack-dev-server -w --progress",
-    "start:skins:css": "mkdirp build && postcss -c postcss.config.json -w",
-    "start": "node scripts/babelcheck.js && parallelshell \"npm run start:emojione\" \"npm run start:res\" \"npm run start:config\" \"npm run start:js\" \"npm run start:skins:css\"",
-    "start:prod": "parallelshell \"npm run start:emojione\" \"npm run start:js:prod\" \"npm run start:skins:css\"",
+    "start:css": "mkdirp build && postcss -c postcss.config.json -w",
+    "start": "node scripts/babelcheck.js && parallelshell \"npm run start:res\" \"npm run start:js\" \"npm run start:css\"",
+    "start:prod": "parallelshell \"npm run start:res\" \"npm run start:js:prod\" \"npm run start:css\"",
     "clean": "rimraf build lib webapp electron/dist",
     "prepublish": "npm run build:compile",
     "test": "karma start --single-run=true --autoWatch=false --browsers PhantomJS --colors=false",
@@ -96,9 +92,11 @@
     "babel-preset-react": "^6.16.0",
     "babel-preset-stage-2": "^6.17.0",
     "catw": "^1.0.1",
+    "chokidar": "^1.6.1",
     "cpx": "^1.3.2",
     "css-raw-loader": "^0.1.1",
-    "electron-builder": "^10.4.1",
+    "electron-builder": "^11.2.4",
+    "electron-builder-squirrel-windows": "^11.2.1",
     "emojione": "^2.2.3",
     "expect": "^1.16.0",
     "fs-extra": "^0.30.0",
@@ -112,6 +110,7 @@
     "karma-phantomjs-launcher": "^1.0.0",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^1.7.0",
+    "minimist": "^1.2.0",
     "mkdirp": "^0.5.1",
     "mocha": "^2.4.5",
     "node-sass": "^4.1.1",
@@ -138,7 +137,7 @@
   "build": {
     "appId": "im.riot.app",
     "category": "Network",
-    "electronVersion": "1.4.11",
+    "electronVersion": "1.4.14",
     "//asar=false": "https://github.com/electron-userland/electron-builder/issues/675",
     "asar": false,
     "dereference": true,
diff --git a/scripts/copy-res.js b/scripts/copy-res.js
new file mode 100755
index 00000000..826d9a96
--- /dev/null
+++ b/scripts/copy-res.js
@@ -0,0 +1,81 @@
+#!/usr/bin/env node
+
+// copies the resources into the webapp directory.
+//
+
+// cpx includes globbed parts of the filename in the destination, but excludes
+// common parents. Hence, "res/{a,b}/**": the output will be "dest/a/..." and
+// "dest/b/...".
+const COPY_LIST = [
+    ["res/{media,vector-icons}/**", "webapp"],
+    ["src/skins/vector/{fonts,img}/**", "webapp"],
+    ["node_modules/emojione/assets/svg/*", "webapp/emojione/svg/"],
+    ["./config.json", "webapp", {directwatch: 1}],
+];
+
+const parseArgs = require('minimist');
+const Cpx = require('cpx');
+const chokidar = require('chokidar');
+
+const argv = parseArgs(
+    process.argv.slice(2), {}
+);
+
+var watch = argv.w;
+var verbose = argv.v;
+
+function errCheck(err) {
+    if (err) {
+        console.error(err.message);
+        process.exit(1);
+    }
+}
+
+function next(i, err) {
+    errCheck(err);
+
+    if (i >= COPY_LIST.length) {
+        return;
+    }
+
+    const ent = COPY_LIST[i];
+    const source = ent[0];
+    const dest = ent[1];
+    const opts = ent[2] || {};
+
+    const cpx = new Cpx.Cpx(source, dest);
+
+    if (verbose) {
+        cpx.on("copy", (event) => {
+            console.log(`Copied: ${event.srcPath} --> ${event.dstPath}`);
+        });
+        cpx.on("remove", (event) => {
+            console.log(`Removed: ${event.path}`);
+        });
+    }
+
+    const cb = (err) => {next(i+1, err)};
+
+    if (watch) {
+        if (opts.directwatch) {
+            // cpx -w creates a watcher for the parent of any files specified,
+            // which in the case of config.json is '.', which inevitably takes
+            // ages to crawl. So we create our own watcher on the files
+            // instead.
+            const copy = () => {cpx.copy(errCheck)};
+            chokidar.watch(source)
+                .on('add', copy)
+                .on('change', copy)
+                .on('ready', cb)
+                .on('error', errCheck);
+        } else {
+            cpx.on('watch-ready', cb);
+            cpx.on("watch-error", cb);
+            cpx.watch();
+        }
+    } else {
+        cpx.copy(cb);
+    }
+}
+
+next(0);
diff --git a/scripts/jenkins.sh b/scripts/jenkins.sh
index be8d8dee..bd27d6e3 100755
--- a/scripts/jenkins.sh
+++ b/scripts/jenkins.sh
@@ -19,7 +19,8 @@ tar -C olm -xz < olm/olm-*.tgz
 rm -r node_modules/olm
 cp -r olm/package node_modules/olm
 
-# we may be using a dev branch of react-sdk, in which case we need to build it
+# we may be using dev branches of js-sdk and react-sdk, in which case we need to build them
+(cd node_modules/matrix-js-sdk && npm run build)
 (cd node_modules/matrix-react-sdk && npm run build)
 
 # run the mocha tests
diff --git a/src/vector/platform/ElectronPlatform.js b/src/vector/platform/ElectronPlatform.js
index 3b41822b..68df88b0 100644
--- a/src/vector/platform/ElectronPlatform.js
+++ b/src/vector/platform/ElectronPlatform.js
@@ -127,4 +127,8 @@ export default class ElectronPlatform extends VectorBasePlatform {
     getDefaultDeviceDisplayName() {
         return "Riot Desktop on " + platformFriendlyName();
     }
+
+    screenCaptureErrorString() {
+        return null;
+    }
 }
diff --git a/src/vector/platform/WebPlatform.js b/src/vector/platform/WebPlatform.js
index c4ed4d55..2029822b 100644
--- a/src/vector/platform/WebPlatform.js
+++ b/src/vector/platform/WebPlatform.js
@@ -196,4 +196,12 @@ export default class WebPlatform extends VectorBasePlatform {
         return app_name + " via " + ua.getBrowser().name +
             " on " + ua.getOS().name;
     }
+
+    screenCaptureErrorString() {
+        // it won't work at all if you're not on HTTPS so whine whine whine
+        if (!global.window || global.window.location.protocol !== "https:") {
+            return "You need to be using HTTPS to place a screen-sharing call.";
+        }
+        return null;
+    }
 }