Ensure the actionbar is not null when setting title
diff --git a/app/src/main/java/org/apache/taverna/mobile/activities/DashboardMainActivity.java b/app/src/main/java/org/apache/taverna/mobile/activities/DashboardMainActivity.java
index d445219..4e7b6f9 100644
--- a/app/src/main/java/org/apache/taverna/mobile/activities/DashboardMainActivity.java
+++ b/app/src/main/java/org/apache/taverna/mobile/activities/DashboardMainActivity.java
@@ -271,8 +271,10 @@
     public void restoreActionBar() {
         ActionBar actionBar = getSupportActionBar();
         //actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
-        actionBar.setDisplayShowTitleEnabled(true);
-        actionBar.setTitle(mTitle);
+        if (actionBar != null) {
+            actionBar.setDisplayShowTitleEnabled(true);
+            actionBar.setTitle(mTitle);
+        }
     }
 
     private void setUpWorkflowDirectory(Context context) {