diff --git a/.eslintrc b/.eslintrc
index e6595427..21a2ea9c 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,3 +1,6 @@
+ecmaFeatures:
+    jsx: true
+
 env:
     node: true
     browser: true
@@ -5,6 +8,7 @@ env:
     builtin: true
     mocha: true
     jasmine: false
+    es6: false
 
 rules:
     handle-callback-err: 1
diff --git a/node_modules/connect-architect/connect.render.ejs/render-ejs.js b/node_modules/connect-architect/connect.render.ejs/render-ejs.js
index 708745fe..9a544416 100644
--- a/node_modules/connect-architect/connect.render.ejs/render-ejs.js
+++ b/node_modules/connect-architect/connect.render.ejs/render-ejs.js
@@ -7,7 +7,7 @@ module.exports = function(options, imports, register) {
     imports["connect.render"].registerEngine("ejs", createView);
     
     ejs.filters.JSONToJS = function(obj, indent) {
-        return JSON.stringify(obj, null, indent).replace(/<\/?script|[\u2028\u2029]/g, function(a) {
+        return JSON.stringify(obj, null, indent).replace(/<\/?script|[\u2028\u2029]/ig, function(a) {
             var h =  a.charCodeAt(0).toString(16);
             return (h.length == 2 ? "\\x" : "\\u") + h + a.substr(1);
         });
diff --git a/package.json b/package.json
index 0a942d39..6bbf9ed8 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
         "emmet": "git://github.com/cloud9ide/emmet-core.git#2ff6dc06ad",
         "engine.io": "~1.5.1",
         "engine.io-client": "~1.5.1",
-        "eslint": "git://github.com/cloud9ide/eslint.git#e2d052aafd81ea0aa6d1d4fd9f88f3613e386160",
+        "eslint": "git://github.com/cloud9ide/eslint.git#dc500e81162bf0cb4747a4a415c121b0c46975cb",
         "http-error": "~0.0.5",
         "less": "^2.4.0",
         "mime": "~1.2.9",
@@ -49,17 +49,17 @@
     },
     "licenses": [],
     "c9plugins": {
-        "c9.ide.language": "#8ef952c6c2",
+        "c9.ide.language": "#77f75c7635",
         "c9.ide.language.css": "#ef8a28943e",
         "c9.ide.language.generic": "#32986699ac",
         "c9.ide.language.html": "#bbe81afed1",
         "c9.ide.language.html.diff": "#a7311cfc9f",
         "c9.ide.language.javascript": "#8479d0a9c1",
         "c9.ide.language.javascript.immediate": "#9a2cce9121",
-        "c9.ide.language.javascript.eslint": "#8832423ad1",
+        "c9.ide.language.javascript.eslint": "#129a16dafb",
         "c9.ide.language.javascript.tern": "#7aab8b0b6a",
         "c9.ide.language.javascript.infer": "#cfec494a3c",
-        "c9.ide.language.jsonalyzer": "#21b64e5820",
+        "c9.ide.language.jsonalyzer": "#dab3edfca5",
         "c9.ide.collab": "#da4d09ae6a",
         "c9.ide.local": "#2bfd7ff051",
         "c9.ide.find": "#6cc6d3379d",
diff --git a/plugins/c9.cli.publish/install.js b/plugins/c9.cli.publish/install.js
index ce82d09c..56af7af3 100644
--- a/plugins/c9.cli.publish/install.js
+++ b/plugins/c9.cli.publish/install.js
@@ -351,7 +351,11 @@ define(function(require, exports, module) {
                         
                         // Untargz package
                         proc.spawn(TAR, {
-                            args: ["-C", normalizePath(packagePath), "-zxvf", normalizePath(gzPath)]
+                            args: [
+                                (verbose ? "-v" : ""),
+                                "-C", normalizePath(packagePath),
+                                "-zxf", normalizePath(gzPath)
+                            ]
                         }, function(err, p){
                             if (err) return callback(err);
                             
diff --git a/plugins/c9.fs/mock/test_es6.js b/plugins/c9.fs/mock/test_es6.js
index dc01bb65..f73b6ab7 100644
--- a/plugins/c9.fs/mock/test_es6.js
+++ b/plugins/c9.fs/mock/test_es6.js
@@ -45,6 +45,10 @@ array;
 var qux = {left};
 qux;
 var {p,q} = { p: 1, q: 2};
+p;
+q;
+
+class Blie {}
 
 class Model extends Blie {
   constructor(properties) {
diff --git a/plugins/c9.ide.ace/ace.js b/plugins/c9.ide.ace/ace.js
index a06b159e..d8f6d7a0 100644
--- a/plugins/c9.ide.ace/ace.js
+++ b/plugins/c9.ide.ace/ace.js
@@ -149,7 +149,7 @@ define(function(require, exports, module) {
                 
                 // fixes a problem with Ace architect loading /lib/ace
                 // creating a conflict with themes
-                if (theme.isDark === undefined)
+                if (!theme || theme.isDark === undefined)
                     throw new Error();
             }
             catch (e) {
diff --git a/plugins/c9.ide.dialog.common/question.js b/plugins/c9.ide.dialog.common/question.js
index 3c9686a0..705331ce 100644
--- a/plugins/c9.ide.dialog.common/question.js
+++ b/plugins/c9.ide.dialog.common/question.js
@@ -42,29 +42,31 @@ define(function(require, module, exports) {
                 
                 plugin.allowClose = cancel;
                 
-                var gotYes = false;
+                var gotYesNo = false;
                 plugin.once("hide", function(){
-                    !gotYes && cancel && onNo(false, true, metadata);
+                    !gotYesNo && cancel && onNo(false, true, metadata);
                 });
                 
                 plugin.update([
                     { id: "cancel", visible: cancel, onclick: function(){ plugin.hide(); } },
                     { id: "dontask", visible: showDontAsk }, 
                     { id: "yestoall", visible: all, onclick: function(){ 
-                        gotYes = true; 
+                        gotYesNo = true; 
                         plugin.hide(); 
                         onYes(true, metadata); 
                     }},
                     { id: "notoall", visible: all, onclick: function(){ 
+                        gotYesNo = true;
                         plugin.hide(); 
                         onNo(true, false, metadata); 
                     }},
                     { id: "yes", onclick: function(){ 
-                        gotYes = true; 
+                        gotYesNo = true; 
                         plugin.hide(); 
                         onYes(false, metadata); 
                     }},
                     { id: "no", onclick: function(){ 
+                        gotYesNo = true;
                         plugin.hide(); 
                         onNo(false, false, metadata); 
                     }}
diff --git a/plugins/c9.ide.plugins/installer.js b/plugins/c9.ide.plugins/installer.js
index 152e1824..957380c8 100644
--- a/plugins/c9.ide.plugins/installer.js
+++ b/plugins/c9.ide.plugins/installer.js
@@ -85,9 +85,12 @@ define(function(require, exports, module) {
             
             var found = {}, packages = [];
             config.forEach(function(item){
-                if (!found[item.name])
-                    found[item.name] = true;
-                else return;
+                if (typeof item === "string") {
+                    item = { name: item, version: null };
+                }
+                
+                if (found[item.name]) return;
+                found[item.name] = true;
                 
                 packages.push({ name: item.name, version: item.version });
             });
@@ -110,9 +113,21 @@ define(function(require, exports, module) {
         function installPlugin(name, version, callback){
             // Headless installation of the plugin
             installer.createSession(name, version, function(session, options){
+                var cmd = [
+                    "c9",
+                    "install",
+                    "--local",
+                    "--force",
+                    "--accessToken=" + auth.accessToken,
+                ];
+                
+                if (version == null)
+                    cmd.push(escapeShell(name));
+                else
+                    cmd.push(escapeShell(name + "@" + version));
+                
                 session.install({
-                    "bash": "c9 install --local --force --accessToken=" + auth.accessToken
-                        + " " + escapeShell(name) + "@" + escapeShell(version)
+                    "bash": cmd.join(" ")
                 });
                 
                 // Force to start immediately