diff --git a/Launcher/runtime/dialog/scenes/options/options.js b/Launcher/runtime/dialog/scenes/options/options.js
index b7749643..88fa0b9c 100644
--- a/Launcher/runtime/dialog/scenes/options/options.js
+++ b/Launcher/runtime/dialog/scenes/options/options.js
@@ -131,6 +131,7 @@ var options = {
                              }
                              options.update();
                          });
+                        testMod.setFocusTraversable(false);
                         checkBoxList.add(testMod);
                         testMod.getStyleClass().add("modname");
                          if(modDescription != "") {
diff --git a/LauncherCore/src/main/java/ru/gravit/launcher/managers/GsonManager.java b/LauncherCore/src/main/java/ru/gravit/launcher/managers/GsonManager.java
index bf89bb33..bf93aafd 100644
--- a/LauncherCore/src/main/java/ru/gravit/launcher/managers/GsonManager.java
+++ b/LauncherCore/src/main/java/ru/gravit/launcher/managers/GsonManager.java
@@ -4,6 +4,7 @@
 import com.google.gson.GsonBuilder;
 import ru.gravit.launcher.hasher.HashedEntry;
 import ru.gravit.launcher.hasher.HashedEntryAdapter;
+import ru.gravit.utils.helper.CommonHelper;
 
 public class GsonManager {
     public GsonBuilder gsonBuilder;
@@ -12,8 +13,8 @@ public class GsonManager {
     public Gson configGson;
 
     public void initGson() {
-        gsonBuilder = new GsonBuilder();
-        configGsonBuilder = new GsonBuilder();
+        gsonBuilder = CommonHelper.newBuilder();
+        configGsonBuilder = CommonHelper.newBuilder();
         configGsonBuilder.setPrettyPrinting();
         registerAdapters(gsonBuilder);
         registerAdapters(configGsonBuilder);
diff --git a/LauncherCore/src/main/java/ru/gravit/utils/helper/CommonHelper.java b/LauncherCore/src/main/java/ru/gravit/utils/helper/CommonHelper.java
index 5f7548e3..11e00272 100644
--- a/LauncherCore/src/main/java/ru/gravit/utils/helper/CommonHelper.java
+++ b/LauncherCore/src/main/java/ru/gravit/utils/helper/CommonHelper.java
@@ -6,6 +6,18 @@
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineFactory;
 import javax.script.ScriptEngineManager;
+
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+import java.util.Base64;
 import java.util.Collection;
 import java.util.LinkedList;
 import java.util.Locale;
@@ -120,4 +132,23 @@ public static String[] parseCommand(CharSequence line) throws CommandException {
         // Return result as array
         return result.toArray(new String[0]);
     }
+
+    @LauncherAPI
+    public static GsonBuilder newBuilder() {
+    	return new GsonBuilder().registerTypeHierarchyAdapter(byte[].class,
+                ByteArrayToBase64TypeAdapter.INSTANCE);
+    }
+
+    private static class ByteArrayToBase64TypeAdapter implements JsonSerializer<byte[]>, JsonDeserializer<byte[]> {
+    	private static final ByteArrayToBase64TypeAdapter INSTANCE = new ByteArrayToBase64TypeAdapter();
+    	private Base64.Decoder decoder = Base64.getUrlDecoder();
+    	private Base64.Encoder encoder = Base64.getUrlEncoder();
+    	public byte[] deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+            return decoder.decode(json.getAsString());
+        }
+
+        public JsonElement serialize(byte[] src, Type typeOfSrc, JsonSerializationContext context) {
+            return new JsonPrimitive(encoder.encodeToString(src));
+        }
+    }
 }