diff --git a/build/browser/app.js b/build/browser/app.js
index a9a8d0ac..27f66d8d 100644
--- a/build/browser/app.js
+++ b/build/browser/app.js
@@ -79,7 +79,7 @@ app.controller('AppController', function($q, DriveScannerService, SelectionState
     console.debug('Burning ' + image + ' to ' + drive.device);
     return self.writer.burn(image, drive).then(function() {
       console.debug('Done!');
-    });
+    }).catch(dialog.showError);
   };
 
   this.open = shell.openExternal;
@@ -119,9 +119,13 @@ var _ = require('lodash');
 var remote = window.require('remote');
 
 if (window.mocha) {
-  var drives = remote.require(require('path').join(__dirname, '..', '..', 'src', 'drives'));
+  var path = require('path');
+  var srcPath = path.join(__dirname, '..', '..', 'src');
+  var drives = remote.require(path.join(srcPath, 'drives'));
+  var dialog = remote.require(path.join(srcPath, 'dialog'));
 } else {
   var drives = remote.require('./src/drives');
+  var dialog = remote.require('./src/dialog');
 }
 
 var driveScanner = angular.module('herostratus.drive-scanner', []);
@@ -227,7 +231,7 @@ driveScanner.service('DriveScannerService', function($q, DriveScannerRefreshServ
    * });
    */
   this.scan = function() {
-    return $q.when(drives.listRemovable());
+    return $q.when(drives.listRemovable()).catch(dialog.showError);
   };
 
   /**
diff --git a/lib/browser/app.js b/lib/browser/app.js
index f8226494..bfa05953 100644
--- a/lib/browser/app.js
+++ b/lib/browser/app.js
@@ -78,7 +78,7 @@ app.controller('AppController', function($q, DriveScannerService, SelectionState
     console.debug('Burning ' + image + ' to ' + drive.device);
     return self.writer.burn(image, drive).then(function() {
       console.debug('Done!');
-    });
+    }).catch(dialog.showError);
   };
 
   this.open = shell.openExternal;
diff --git a/lib/browser/modules/drive-scanner.js b/lib/browser/modules/drive-scanner.js
index 607293c2..01732fae 100644
--- a/lib/browser/modules/drive-scanner.js
+++ b/lib/browser/modules/drive-scanner.js
@@ -30,9 +30,13 @@ var _ = require('lodash');
 var remote = window.require('remote');
 
 if (window.mocha) {
-  var drives = remote.require(require('path').join(__dirname, '..', '..', 'src', 'drives'));
+  var path = require('path');
+  var srcPath = path.join(__dirname, '..', '..', 'src');
+  var drives = remote.require(path.join(srcPath, 'drives'));
+  var dialog = remote.require(path.join(srcPath, 'dialog'));
 } else {
   var drives = remote.require('./src/drives');
+  var dialog = remote.require('./src/dialog');
 }
 
 var driveScanner = angular.module('herostratus.drive-scanner', []);
@@ -138,7 +142,7 @@ driveScanner.service('DriveScannerService', function($q, DriveScannerRefreshServ
    * });
    */
   this.scan = function() {
-    return $q.when(drives.listRemovable());
+    return $q.when(drives.listRemovable()).catch(dialog.showError);
   };
 
   /**
diff --git a/lib/src/dialog.js b/lib/src/dialog.js
index 796c9426..5b7b6659 100644
--- a/lib/src/dialog.js
+++ b/lib/src/dialog.js
@@ -55,3 +55,19 @@ exports.selectImage = function() {
     });
   });
 };
+
+/**
+ * @summary Show error dialog for an Error instance
+ * @function
+ * @public
+ *
+ * @param {Error} error - error
+ *
+ * @example
+ * dialog.showError(new Error('Foo Bar'));
+ */
+exports.showError = function(error) {
+  'use strict';
+
+  dialog.showErrorBox(error.message, error.stack || '');
+};