diff --git a/app/src/full/java/org/fdroid/fdroid/views/main/NearbyViewBinder.java b/app/src/full/java/org/fdroid/fdroid/views/main/NearbyViewBinder.java
index 0df89f884..bf9684911 100644
--- a/app/src/full/java/org/fdroid/fdroid/views/main/NearbyViewBinder.java
+++ b/app/src/full/java/org/fdroid/fdroid/views/main/NearbyViewBinder.java
@@ -85,11 +85,15 @@ class NearbyViewBinder {
                     Environment.isExternalStorageRemovable(activity.getExternalFilesDir("")));
             File[] dirs = activity.getExternalFilesDirs("");
             if (dirs != null) {
-                for (File f : dirs) {
-                    if (f != null && Environment.isExternalStorageRemovable(f)) {
-                        // remove Android/data/org.fdroid.fdroid/files to get root
-                        externalStorage = f.getParentFile().getParentFile().getParentFile().getParentFile();
-                        break;
+                for (File dir : dirs) {
+                    if (dir != null && Environment.isExternalStorageRemovable(dir)) {
+                        String state = Environment.getExternalStorageState(dir);
+                        if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)
+                                || Environment.MEDIA_MOUNTED.equals(state)) {
+                            // remove Android/data/org.fdroid.fdroid/files to get root
+                            externalStorage = dir.getParentFile().getParentFile().getParentFile().getParentFile();
+                            break;
+                        }
                     }
                 }
             }
@@ -100,7 +104,11 @@ class NearbyViewBinder {
             externalStorage = Environment.getExternalStorageDirectory();
         }
 
-        if (externalStorage != null) {
+        final String writeExternalStorage = Manifest.permission.WRITE_EXTERNAL_STORAGE;
+
+        if (externalStorage != null
+                || PackageManager.PERMISSION_GRANTED
+                != ContextCompat.checkSelfPermission(activity, writeExternalStorage)) {
             nearbySplash.setVisibility(View.GONE);
             View readExternalStorage = swapView.findViewById(R.id.readExternalStorage);
             readExternalStorage.setVisibility(View.VISIBLE);
@@ -109,26 +117,20 @@ class NearbyViewBinder {
                 @RequiresApi(api = 21)
                 @Override
                 public void onClick(View v) {
-                    File storage = externalStorage.getParentFile();
-                    File[] files = storage.listFiles();
-                    String msg = "";
-                    if (files != null) for (File f : files) {
-                        msg += "|" + f.getName();
-                    }
-                    Toast.makeText(activity, msg, Toast.LENGTH_LONG).show();
-                    final String writeExternalStorage = Manifest.permission.WRITE_EXTERNAL_STORAGE;
                     if (Build.VERSION.SDK_INT >= 23
-                            && !externalStorage.canRead()
+                            && (externalStorage == null || !externalStorage.canRead())
                             && PackageManager.PERMISSION_GRANTED
                             != ContextCompat.checkSelfPermission(activity, writeExternalStorage)) {
                         ActivityCompat.requestPermissions(activity, new String[]{writeExternalStorage},
                                 MainActivity.REQUEST_STORAGE_PERMISSIONS);
                     } else {
+                        Toast.makeText(activity,
+                                activity.getString(R.string.scan_removable_storage_toast, externalStorage),
+                                Toast.LENGTH_SHORT).show();
                         SDCardScannerService.scan(activity);
                     }
                 }
             });
-
         }
     }
 }
diff --git a/app/src/main/java/org/fdroid/fdroid/installer/ApkVerifier.java b/app/src/main/java/org/fdroid/fdroid/installer/ApkVerifier.java
index e59ba3678..fc827122a 100644
--- a/app/src/main/java/org/fdroid/fdroid/installer/ApkVerifier.java
+++ b/app/src/main/java/org/fdroid/fdroid/installer/ApkVerifier.java
@@ -26,7 +26,6 @@ import android.net.Uri;
 import android.support.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Log;
-
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.data.Apk;
 
@@ -91,9 +90,11 @@ class ApkVerifier {
         Utils.debugLog(TAG, "expectedTargetSdkVersion: " + expectedTargetSdkVersion);
         if (expectedTargetSdkVersion == Apk.SDK_VERSION_MIN_VALUE) {
             // NOTE: In old fdroidserver versions, targetSdkVersion was not stored inside the repo!
-            Log.w(TAG, "Skipping check for targetSdkVersion, not available in this repo!");
+            Log.w(TAG, "Skipping check for targetSdkVersion, not available in this app or repo!");
         } else if (localTargetSdkVersion != expectedTargetSdkVersion) {
-            throw new ApkVerificationException("TargetSdkVersion of apk file is not the expected targetSdkVersion!");
+            throw new ApkVerificationException(
+                    String.format("TargetSdkVersion of apk file (%d) is not the expected targetSdkVersion (%d)!",
+                            localTargetSdkVersion, expectedTargetSdkVersion));
         }
     }
 
diff --git a/app/src/main/java/org/fdroid/fdroid/views/main/MainActivity.java b/app/src/main/java/org/fdroid/fdroid/views/main/MainActivity.java
index 444765855..26b506e99 100644
--- a/app/src/main/java/org/fdroid/fdroid/views/main/MainActivity.java
+++ b/app/src/main/java/org/fdroid/fdroid/views/main/MainActivity.java
@@ -56,6 +56,7 @@ import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.UpdateService;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.data.NewRepoConfig;
+import org.fdroid.fdroid.localrepo.SDCardScannerService;
 import org.fdroid.fdroid.views.AppDetailsActivity;
 import org.fdroid.fdroid.views.ManageReposActivity;
 import org.fdroid.fdroid.views.apps.AppListActivity;
@@ -248,6 +249,11 @@ public class MainActivity extends AppCompatActivity implements BottomNavigationB
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
         if (requestCode == REQUEST_LOCATION_PERMISSIONS) {
             startActivity(new Intent(this, SwapWorkflowActivity.class));
+        } else if (requestCode == REQUEST_STORAGE_PERMISSIONS) {
+            Toast.makeText(this,
+                    this.getString(R.string.scan_removable_storage_toast, ""),
+                    Toast.LENGTH_SHORT).show();
+            SDCardScannerService.scan(this);
         }
     }
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b7bc47db7..f85b4273a 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -60,6 +60,7 @@
     <string name="local_repo_name_summary">The advertised title of your local repo: %s</string>
     <string name="local_repo_https_on">Use encrypted HTTPS:// connection for local repo</string>
     <string name="scan_removable_storage_title">Scan removable storage</string>
+    <string name="scan_removable_storage_toast">Scanning %s…</string>
     <string name="scan_removable_storage_summary">Look for package repos on removable storage like SD Cards
         and USB thumb drives
     </string>