diff --git a/app/build.gradle b/app/build.gradle
index 7548415..166b79c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -20,7 +20,7 @@ android {
         minSdkVersion 21
         targetSdkVersion 22
         versionCode 6
-        versionName "2.0"
+        versionName "2.1"
     }
     buildTypes {
         release {
@@ -42,6 +42,6 @@ android {
 }
 
 dependencies {
-    compile fileTree(include: ['*.jar'], dir: 'libs')
-    compile 'com.android.support:support-v4:23.2.1'
+    api fileTree(include: ['*.jar'], dir: 'libs')
+    api 'com.android.support:support-v4:23.2.1'
 }
diff --git a/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/PrefsManager.java b/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/PrefsManager.java
index 74c1392..a877a48 100644
--- a/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/PrefsManager.java
+++ b/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/PrefsManager.java
@@ -33,7 +33,7 @@ public static final void setDefaultDir(Context context, String dir) {
 
 	public static final String getDefaultDir(Context context) {
 		return context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
-					  .getString(PREF_DEFAULTDIRECTORY, "/");
+					  .getString(PREF_DEFAULTDIRECTORY, null);
 	}
 
 	private static final String PREF_LOGGING = "logging";
diff --git a/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileBrowserFragment.java b/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileBrowserFragment.java
index 69877c3..25f06e5 100644
--- a/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileBrowserFragment.java
+++ b/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileBrowserFragment.java
@@ -6,6 +6,7 @@
 
 import android.app.Fragment;
 import android.os.Bundle;
+import android.os.Environment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -61,8 +62,12 @@ public void onDirectoryOrFileClick(File file) {
 
 		TextView textViewFile = (TextView) v.findViewById(R.id.textViewFile);
 		fileList.setTextViewFile(textViewFile);
-
-		fileList.init(new File (mOwner.getDefaultDir()));
+		String s = mOwner.getDefaultDir();
+		if (s != null) {
+			fileList.init(new File (s));
+		} else {
+			fileList.init(Environment.getExternalStorageDirectory());
+		}
 	}
 }
 
diff --git a/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileListView.java b/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileListView.java
index 9eea024..3001f42 100644
--- a/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileListView.java
+++ b/app/src/main/java/uk/co/yahoo/p1rpp/calendartrigger/activites/FileListView.java
@@ -69,11 +69,7 @@ public void setRowView(int rowViewResourceId) {
 	 * @param path root directory
 	 */
 	public void init(File path) {
-		if(path != null) {
-			adapter.setPath(path);
-		} else {
-			adapter.setPath(Environment.getExternalStorageDirectory());
-		}
+		adapter.setPath(path);
 
 		if(!adapter.hasExtentions()) {
 			setDefaultFileExtentions();
diff --git a/build.gradle b/build.gradle
index 24ae3ee..64b8892 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,9 +7,10 @@ buildscript {
             url 'https://maven.google.com/'
             name 'Google'
         }
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.0'
+        classpath 'com.android.tools.build:gradle:3.1.2'
     }
 }