diff --git a/.gitignore b/.gitignore
index 3417a1bf..49639ae5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 .project
 .settings/
 .settings.xml
+.c9settiongs.xml
 .settings.xml.old
 .*.gz
 
diff --git a/lib/ace/edit_session.js b/lib/ace/edit_session.js
index 3d630ce3..4f31f39a 100644
--- a/lib/ace/edit_session.js
+++ b/lib/ace/edit_session.js
@@ -214,7 +214,7 @@ var EditSession = function(text, mode) {
      *  }
      */
     this.setAnnotations = function(annotations) {
-        this.$annotations = [];
+        this.$annotations = {};
         for (var i=0; i<annotations.length; i++) {
             var annotation = annotations[i];
             var row = annotation.row;
@@ -231,7 +231,7 @@ var EditSession = function(text, mode) {
     };
 
     this.clearAnnotations = function() {
-        this.$annotations = [];
+        this.$annotations = {};
         this._dispatchEvent("changeAnnotation", {});
     };
 
diff --git a/lib/ace/layer/gutter.js b/lib/ace/layer/gutter.js
index a7cd82f1..8088cdbb 100644
--- a/lib/ace/layer/gutter.js
+++ b/lib/ace/layer/gutter.js
@@ -72,12 +72,15 @@ var Gutter = function(parentEl) {
 
     this.setAnnotations = function(annotations) {
         // iterate over sparse array
-        this.$annotations = [];
+        this.$annotations = [];        
         for (var row in annotations) {
+            var rowAnnotations = annotations[row];
+            if (!rowAnnotations)
+                continue;
+                
             var rowInfo = this.$annotations[row] = {
                 text: []
             };
-            var rowAnnotations = annotations[row];
             for (var i=0; i<rowAnnotations.length; i++) {
                 var annotation = rowAnnotations[i];
                 rowInfo.text.push(annotation.text.replace(/"/g, "&quot;").replace(/'/g, "&rsquo;").replace(/</, "&lt;"));
diff --git a/lib/ace/worker/worker.js b/lib/ace/worker/worker.js
index cb449ffd..a7a555d9 100644
--- a/lib/ace/worker/worker.js
+++ b/lib/ace/worker/worker.js
@@ -19,9 +19,10 @@ var require = function(id) {
     
     var chunks = id.split("/");
     chunks[0] = require.tlns[chunks[0]] || chunks[0];
-    path = require.baseUrl + "/" + chunks.join("/") + ".js"
+    path = /*require.baseUrl + "/" +*/ chunks.join("/") + ".js"
     
     require.id = id;
+//    console.log("require " +  path + " " + id)
     importScripts(path);
     return require(id);    
 };
diff --git a/lib/ace/worker/worker_client.js b/lib/ace/worker/worker_client.js
index f98e5a1e..44cb453b 100644
--- a/lib/ace/worker/worker_client.js
+++ b/lib/ace/worker/worker_client.js
@@ -42,6 +42,7 @@ var WorkerClient = function(baseUrl, topLevelNamespaces, packagedJs, module, cla
 
     var _self = this;
     this.$worker.onerror = function(e) {
+        console.log(e);
         throw e;
     };
     this.$worker.onmessage = function(e) {
diff --git a/support/pilot b/support/pilot
index 67a38030..c0cab19c 160000
--- a/support/pilot
+++ b/support/pilot
@@ -1 +1 @@
-Subproject commit 67a380309e5b139a9603334ad9d9f917659f04bc
+Subproject commit c0cab19cbb5d44df98bae0060c782a6f30464afe