diff --git a/app/src/main/java/org/transdroid/core/app/settings/ApplicationSettings.java b/app/src/main/java/org/transdroid/core/app/settings/ApplicationSettings.java
index d73ab83a..d174040a 100644
--- a/app/src/main/java/org/transdroid/core/app/settings/ApplicationSettings.java
+++ b/app/src/main/java/org/transdroid/core/app/settings/ApplicationSettings.java
@@ -151,6 +151,16 @@ public class ApplicationSettings {
 		String localPort = prefs.getString("server_localport_" + order, "");
 		if (localPort.equals(""))
 			localPort = port; // Default to the normal (non-local) port
+		try {
+			Integer.parseInt(port);
+		} catch (NumberFormatException e) {
+			port = Integer.toString(Daemon.getDefaultPortNumber(type, ssl));
+		}
+		try {
+			Integer.parseInt(localPort);
+		} catch (NumberFormatException e) {
+			localPort = port;
+		}
 
 		return new ServerSetting(order, 
 				prefs.getString("server_name_" + order, null), 
diff --git a/app/src/main/java/org/transdroid/core/gui/DetailsFragment.java b/app/src/main/java/org/transdroid/core/gui/DetailsFragment.java
index 3da8d9dc..b1f51b8c 100644
--- a/app/src/main/java/org/transdroid/core/gui/DetailsFragment.java
+++ b/app/src/main/java/org/transdroid/core/gui/DetailsFragment.java
@@ -447,11 +447,14 @@ public class DetailsFragment extends Fragment implements OnTrackersUpdatedListen
 				andftpStart.putExtra("local_folder", "/sdcard/Download");
 				for (int f = 0; f < checked.size(); f++) {
 					String file = checked.get(f).getRelativePath();
-					// If the file is directly in the root, AndFTP fails if we supply the proper path (like /file.pdf)
-					// Work around this bug by removing the leading / if no further directories are used in the path
-					if (file.startsWith("/") && file.indexOf("/", 1) < 0)
-						file = file.substring(1);
-					andftpStart.putExtra("remote_file" + (f + 1), file);
+					if (file != null) {
+						// If the file is directly in the root, AndFTP fails if we supply the proper path (like
+						// /file.pdf)
+						// Work around this bug by removing the leading / if no further directories are used in the path
+						if (file.startsWith("/") && file.indexOf("/", 1) < 0)
+							file = file.substring(1);
+						andftpStart.putExtra("remote_file" + (f + 1), file);
+					}
 				}
 				if (andftpStart.resolveActivity(getActivity().getPackageManager()) != null) {
 					startActivity(andftpStart);
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index ca5e8596..441354bc 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -277,8 +277,8 @@ along with Transdroid.  If not, see <http://www.gnu.org/licenses/>.
 <string name="pref_import">Импортировать настройки</string>
 <string name="pref_import_dialog">%1$s импорт настроек сервера, веб-поиска, RSS и системы из %2$s</string>
 <string name="pref_import_success">Настройки успешно импортированы</string>
-<string name="pref_export">Настройки экспорта</string>
-<string name="pref_export_dialog">%1$s экспорт настроек  сервера (включая пароли), веб-поиска, RSS и системы в текст файл JSON :%2$s</string>
+<string name="pref_export">Экспортировать настройки</string>
+<string name="pref_export_dialog">%1$s экспорт настроек сервера (включая пароли), веб-поиска, RSS и системы в текстовый файл JSON :%2$s</string>
 <string name="pref_export_success">Настройки успешно экспортированы</string>
 
 <string name="pref_help">Помощь</string>