diff --git a/app/src/main/java/org/ab/x48/AssetUtil.java b/app/src/main/java/org/ab/x48/AssetUtil.java
index fd9fad4..3ee05eb 100644
--- a/app/src/main/java/org/ab/x48/AssetUtil.java
+++ b/app/src/main/java/org/ab/x48/AssetUtil.java
@@ -15,7 +15,7 @@ public class AssetUtil {
 	public static boolean copyAsset(Context context, AssetManager am, boolean force) {
 		File newDir = getSDDir(context);
 		File sd = Environment.getExternalStorageDirectory();
-		if (sd != null && sd.exists() && sd.isDirectory() && newDir.exists() && newDir.isDirectory()) {
+		if (sd != null && sd.exists() && sd.isDirectory() && newDir != null && newDir.exists() && newDir.isDirectory()) {
 			File hpDir = new File(sd, ".hp48");
 			if (hpDir.exists()) {
 				File allFiles [] = hpDir.listFiles();
diff --git a/app/src/main/java/org/ab/x48/X48.java b/app/src/main/java/org/ab/x48/X48.java
index 6281dff..33e0c52 100644
--- a/app/src/main/java/org/ab/x48/X48.java
+++ b/app/src/main/java/org/ab/x48/X48.java
@@ -138,20 +138,11 @@ public class X48 extends Activity {
     	else
     		setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);*/
     	bitmapSkin = mPrefs.getBoolean("bitmapskin", false);
-    	mainView.backBuffer = null;
-    	mainView.needFlip = true;
-		String port1 = mPrefs.getString("port1", "0");
+    	String port1 = mPrefs.getString("port1", "0");
 		managePort(1, port1);
 		String port2 = mPrefs.getString("port2", "0");
 		managePort(2, port2);
 		saveonExit = mPrefs.getBoolean("saveOnExit", false);
-		if (mainView != null) {
-			mainView.setHapticFeedbackEnabled(mPrefs.getBoolean("haptic", true));
-			mainView.setFullWidth(mPrefs.getBoolean("large_width", false));
-			mainView.setScaleControls(mPrefs.getBoolean("scale_buttons", false));
-			mainView.setKeybLite(mPrefs.getBoolean("keybLite", false));
-			mainView.setSound(mPrefs.getBoolean("sound", false));
-		}
 		if (mPrefs.getBoolean("fullScreen", false)) {
 			getWindow().addFlags(LayoutParams.FLAG_FULLSCREEN);
 			getWindow().clearFlags(LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
@@ -159,7 +150,16 @@ public class X48 extends Activity {
     		getWindow().addFlags(LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
 			getWindow().clearFlags(LayoutParams.FLAG_FULLSCREEN);
 		}
-		mainView.requestLayout();
+		if (mainView != null) {
+			mainView.backBuffer = null;
+    		mainView.needFlip = true;
+			mainView.setHapticFeedbackEnabled(mPrefs.getBoolean("haptic", true));
+			mainView.setFullWidth(mPrefs.getBoolean("large_width", false));
+			mainView.setScaleControls(mPrefs.getBoolean("scale_buttons", false));
+			mainView.setKeybLite(mPrefs.getBoolean("keybLite", false));
+			mainView.setSound(mPrefs.getBoolean("sound", false));
+			mainView.requestLayout();
+		}
     }
         
     public void changeKeybLite() {