diff --git a/app/src/main/java/de/danoeh/antennapod/activity/AudioplayerActivity.java b/app/src/main/java/de/danoeh/antennapod/activity/AudioplayerActivity.java
index 2dacb5121..b4e8d4d71 100644
--- a/app/src/main/java/de/danoeh/antennapod/activity/AudioplayerActivity.java
+++ b/app/src/main/java/de/danoeh/antennapod/activity/AudioplayerActivity.java
@@ -139,7 +139,9 @@ public class AudioplayerActivity extends MediaplayerActivity implements NavDrawe
     @Override
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
-        drawerToggle.onConfigurationChanged(newConfig);
+        if(drawerToggle != null) {
+            drawerToggle.onConfigurationChanged(newConfig);
+        }
     }
 
     private void loadLastFragment() {
@@ -283,7 +285,10 @@ public class AudioplayerActivity extends MediaplayerActivity implements NavDrawe
     }
 
     public void notifyMediaPositionChanged() {
-        ChaptersFragment chaptersFragment = mPagerAdapter.getChaptersFragment();
+        if(pagerAdapter == null) {
+            return;
+        }
+        ChaptersFragment chaptersFragment = pagerAdapter.getChaptersFragment();
         if(chaptersFragment != null) {
             ChaptersListAdapter adapter = (ChaptersListAdapter) chaptersFragment.getListAdapter();
             if (adapter != null) {
diff --git a/app/src/main/java/de/danoeh/antennapod/activity/MediaplayerActivity.java b/app/src/main/java/de/danoeh/antennapod/activity/MediaplayerActivity.java
index 27212acd6..0d878b556 100644
--- a/app/src/main/java/de/danoeh/antennapod/activity/MediaplayerActivity.java
+++ b/app/src/main/java/de/danoeh/antennapod/activity/MediaplayerActivity.java
@@ -206,8 +206,10 @@ public abstract class MediaplayerActivity extends AppCompatActivity implements O
     @Override
     protected void onPause() {
         super.onPause();
-        controller.reinitServiceIfPaused();
-        controller.pause();
+        if(controller != null) {
+            controller.reinitServiceIfPaused();
+            controller.pause();
+        }
     }
 
     /**
@@ -582,7 +584,9 @@ public abstract class MediaplayerActivity extends AppCompatActivity implements O
         super.onResume();
         Log.d(TAG, "onResume()");
         StorageUtils.checkStorageAvailability(this);
-        controller.init();
+        if(controller != null) {
+            controller.init();
+        }
     }
 
     /**
@@ -618,6 +622,9 @@ public abstract class MediaplayerActivity extends AppCompatActivity implements O
 
     private void updateProgressbarPosition(int position, int duration) {
         Log.d(TAG, "updateProgressbarPosition(" + position + ", " + duration + ")");
+        if(sbPosition == null) {
+            return;
+        }
         float progress = ((float) position) / duration;
         sbPosition.setProgress((int) (progress * sbPosition.getMax()));
     }