diff --git a/app/build.gradle b/app/build.gradle
index b2b5d7b..b8fbb48 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -36,8 +36,8 @@ android {
         applicationId "com.wbrawner.simplemarkdown"
         minSdkVersion 19
         targetSdkVersion 27
-        versionCode 6
-        versionName "0.4.0"
+        versionCode 7
+        versionName "0.4.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -65,7 +65,7 @@ android {
 }
 
 ext {
-    support_version = "27.0.2"
+    support_version = "27.1.0"
 }
 
 dependencies {
diff --git a/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/ExplorerActivity.java b/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/ExplorerActivity.java
index 0b2cd12..81e1ace 100644
--- a/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/ExplorerActivity.java
+++ b/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/ExplorerActivity.java
@@ -15,6 +15,7 @@ import android.widget.EditText;
 import android.widget.ListView;
 import android.widget.SimpleAdapter;
 
+import com.crashlytics.android.Crashlytics;
 import com.wbrawner.simplemarkdown.R;
 import com.wbrawner.simplemarkdown.utility.Constants;
 import com.wbrawner.simplemarkdown.utility.Utils;
@@ -100,11 +101,7 @@ public class ExplorerActivity extends AppCompatActivity {
 //        );
 
         listView = findViewById(R.id.file_list);
-        File docsDir = new File(docsDirPath);
-        if (!docsDir.exists()) {
-            docsDir = Environment.getExternalStorageDirectory();
-        }
-        updateListView(docsDir);
+        updateListView();
     }
 
     @Override
@@ -117,7 +114,19 @@ public class ExplorerActivity extends AppCompatActivity {
 
         if (hasRemovableStorage()) {
             menu.findItem(R.id.action_use_sdcard).setVisible(true);
-            if (filePath.get().contains(mounts[1].getAbsolutePath())) {
+            boolean sdcardSelected = false;
+            try {
+                sdcardSelected = filePath.get().contains(mounts[1].getAbsolutePath());
+            } catch (NullPointerException e) {
+                updateListView();
+                menu.findItem(R.id.action_use_sdcard).setVisible(false);
+                Crashlytics.logException(e);
+                Crashlytics.log(mounts.length + " mounts found");
+                for (File mount : mounts) {
+                    Crashlytics.log(mount.getAbsolutePath());
+                }
+            }
+            if (sdcardSelected) {
                 menu.findItem(R.id.action_use_sdcard).setChecked(true);
             }
         }
@@ -196,6 +205,14 @@ public class ExplorerActivity extends AppCompatActivity {
         return sortedFiles;
     }
 
+    private void updateListView() {
+        File docsDir = new File(docsDirPath);
+        if (!docsDir.exists()) {
+            docsDir = Environment.getExternalStorageDirectory();
+        }
+        updateListView(docsDir);
+    }
+
     private void updateListView(File filesDir) {
         setTitle(filesDir.getName());
         filePath.set(filesDir.getAbsolutePath());