diff --git a/mobile/android/base/ChromeCast.java b/mobile/android/base/ChromeCast.java
index 6f2a11209d5..b7187558d01 100644
--- a/mobile/android/base/ChromeCast.java
+++ b/mobile/android/base/ChromeCast.java
@@ -45,6 +45,9 @@ class ChromeCast implements GeckoMediaPlayer {
     private GoogleApiClient apiClient;
     private RemoteMediaPlayer remoteMediaPlayer;
     private boolean canMirror;
+    private String mSessionId;
+    private MirrorChannel mMirrorChannel;
+    private boolean mApplicationStarted = false;
 
     // Callback to start playback of a url on a remote device
     private class VideoPlayCallback implements ResultCallback<ApplicationConnectionResult>,
@@ -90,6 +93,7 @@ class ChromeCast implements GeckoMediaPlayer {
                 remoteMediaPlayer = new RemoteMediaPlayer();
                 remoteMediaPlayer.setOnStatusUpdatedListener(this);
                 remoteMediaPlayer.setOnMetadataUpdatedListener(this);
+                mSessionId = result.getSessionId();
 
                 try {
                     Cast.CastApi.setMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace(), remoteMediaPlayer);
@@ -99,7 +103,7 @@ class ChromeCast implements GeckoMediaPlayer {
 
                 startPlayback();
             } else {
-                callback.sendError(null);
+                callback.sendError(status.toString());
             }
         }
 
@@ -122,7 +126,7 @@ class ChromeCast implements GeckoMediaPlayer {
                         }
 
                         debug("Media load failed " + result.getStatus());
-                        callback.sendError(null);
+                        callback.sendError(result.getStatus().toString());
                     }
                 });
 
@@ -133,7 +137,7 @@ class ChromeCast implements GeckoMediaPlayer {
                 debug("Problem opening media during loading", e);
             }
 
-            callback.sendError(null);
+            callback.sendError("");
         }
     }
 
@@ -188,6 +192,8 @@ class ChromeCast implements GeckoMediaPlayer {
                 @Override
                 public void onConnected(Bundle connectionHint) {
                     if (!apiClient.isConnected()) {
+                        debug("Connection failed");
+                        callback.sendError("Not connected");
                         return;
                     }
 
@@ -219,14 +225,34 @@ class ChromeCast implements GeckoMediaPlayer {
         callback.sendSuccess(null);
     }
 
+    public boolean verifySession(final EventCallback callback) {
+        if (apiClient == null || !apiClient.isConnected()) {
+            debug("Can't play. No connection");
+            callback.sendError("Not connected");
+            return false;
+        }
+
+        if (mSessionId == null) {
+            debug("Can't play. No session");
+            callback.sendError("No session");
+            return false;
+        }
+
+        return true;
+    }
+
     public void play(final EventCallback callback) {
+        if (!verifySession(callback)) {
+            return;
+        }
+
         remoteMediaPlayer.play(apiClient).setResultCallback(new ResultCallback<MediaChannelResult>() {
             @Override
             public void onResult(MediaChannelResult result) {
                 Status status = result.getStatus();
                 if (!status.isSuccess()) {
-                    debug("Unable to toggle pause: " + status.getStatusCode());
-                    callback.sendError(null);
+                    debug("Unable to play: " + status.getStatusCode());
+                    callback.sendError(status.toString());
                 } else {
                     callback.sendSuccess(null);
                 }
@@ -235,13 +261,17 @@ class ChromeCast implements GeckoMediaPlayer {
     }
 
     public void pause(final EventCallback callback) {
+        if (!verifySession(callback)) {
+            return;
+        }
+
         remoteMediaPlayer.pause(apiClient).setResultCallback(new ResultCallback<MediaChannelResult>() {
             @Override
             public void onResult(MediaChannelResult result) {
                 Status status = result.getStatus();
                 if (!status.isSuccess()) {
-                    debug("Unable to toggle pause: " + status.getStatusCode());
-                    callback.sendError(null);
+                    debug("Unable to pause: " + status.getStatusCode());
+                    callback.sendError(status.toString());
                 } else {
                     callback.sendSuccess(null);
                 }
@@ -250,6 +280,10 @@ class ChromeCast implements GeckoMediaPlayer {
     }
 
     public void end(final EventCallback callback) {
+        if (!verifySession(callback)) {
+            return;
+        }
+
         Cast.CastApi.stopApplication(apiClient).setResultCallback(new ResultCallback<Status>() {
             @Override
             public void onResult(Status result) {
@@ -257,6 +291,7 @@ class ChromeCast implements GeckoMediaPlayer {
                     try {
                         Cast.CastApi.removeMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace());
                         remoteMediaPlayer = null;
+                        mSessionId = null;
                         apiClient.disconnect();
                         apiClient = null;
 
@@ -271,18 +306,13 @@ class ChromeCast implements GeckoMediaPlayer {
                 }
 
                 if (callback != null) {
-                    callback.sendError(null);
+                    callback.sendError(result.getStatus().toString());
                 }
             }
         });
     }
 
-    private String mSessionId;
-    MirrorChannel mMirrorChannel;
-    boolean mApplicationStarted = false;
-
     class MirrorChannel implements MessageReceivedCallback {
-
         /**
          * @return custom namespace
          */
@@ -347,7 +377,7 @@ class ChromeCast implements GeckoMediaPlayer {
 
                 GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Casting:Mirror", route.getId()));
             } else {
-                callback.sendError(null);
+                callback.sendError(status.toString());
             }
         }
     }
diff --git a/mobile/android/chrome/content/CastingApps.js b/mobile/android/chrome/content/CastingApps.js
index 179e4ac0c5b..72aad7c0fbe 100644
--- a/mobile/android/chrome/content/CastingApps.js
+++ b/mobile/android/chrome/content/CastingApps.js
@@ -542,8 +542,11 @@ var CastingApps = {
     }
 
     this.session.remoteMedia.shutdown();
-    this.session.app.stop();
+    this._shutdown();
+  },
 
+  _shutdown: function() {
+    this.session.app.stop();
     let video = this.session.videoRef.get();
     if (video) {
       this._sendEventToVideo(video, { active: false });
@@ -571,6 +574,7 @@ var CastingApps = {
 
   onRemoteMediaStop: function(aRemoteMedia) {
     sendMessageToJava({ type: "Casting:Stopped" });
+    this._shutdown();
   },
 
   onRemoteMediaStatus: function(aRemoteMedia) {
diff --git a/mobile/android/modules/MediaPlayerApp.jsm b/mobile/android/modules/MediaPlayerApp.jsm
index 6828c6d8112..bdf11948246 100644
--- a/mobile/android/modules/MediaPlayerApp.jsm
+++ b/mobile/android/modules/MediaPlayerApp.jsm
@@ -36,14 +36,18 @@ function MediaPlayerApp(service) {
 
 MediaPlayerApp.prototype = {
   start: function start(callback) {
-    send("MediaPlayer:Start", { id: this.id }, (result) => {
-      if (callback) callback(true);
+    send("MediaPlayer:Start", { id: this.id }, (result, err) => {
+      if (callback) {
+        callback(err == null);
+      }
     });
   },
 
   stop: function stop(callback) {
-    send("MediaPlayer:Stop", { id: this.id }, (result) => {
-      if (callback) callback(true);
+    send("MediaPlayer:Stop", { id: this.id }, (result, err) => {
+      if (callback) {
+        callback(err == null);
+      }
     });
   },
 
@@ -54,8 +58,10 @@ MediaPlayerApp.prototype = {
   },
 
   mirror: function mirror(callback) {
-    send("MediaPlayer:Mirror", { id: this.id }, (result) => {
-      if (callback) callback(true);
+    send("MediaPlayer:Mirror", { id: this.id }, (result, err) => {
+      if (callback) {
+        callback(err == null);
+      }
     });
   }
 }
@@ -75,7 +81,7 @@ function RemoteMedia(id, listener) {
 
 RemoteMedia.prototype = {
   shutdown: function shutdown() {
-    this._send("MediaPlayer:End", {}, (result) => {
+    this._send("MediaPlayer:End", {}, (result, err) => {
       this._status = "shutdown";
       if ("onRemoteMediaStop" in this._listener) {
         this._listener.onRemoteMediaStop(this);
@@ -84,19 +90,37 @@ RemoteMedia.prototype = {
   },
 
   play: function play() {
-    this._send("MediaPlayer:Play", {}, (result) => {
+    this._send("MediaPlayer:Play", {}, (result, err) => {
+      if (err) {
+        Cu.reportError("Can't play " + err);
+        this.shutdown();
+        return;
+      }
+
       this._status = "started";
     });
   },
 
   pause: function pause() {
-    this._send("MediaPlayer:Pause", {}, (result) => {
+    this._send("MediaPlayer:Pause", {}, (result, err) => {
+      if (err) {
+        Cu.reportError("Can't pause " + err);
+        this.shutdown();
+        return;
+      }
+
       this._status = "paused";
     });
   },
 
   load: function load(aData) {
-    this._send("MediaPlayer:Load", aData, (result) => {
+    this._send("MediaPlayer:Load", aData, (result, err) => {
+      if (err) {
+        Cu.reportError("Can't load " + err);
+        this.shutdown();
+        return;
+      }
+
       this._status = "started";
     })
   },