fix some issues

src/main/scala/com/github/shadowsocks/BaseService.scala

@@ -106,8 +106,8 @@ trait BaseService {
       override def run() {
         if (state != s) {
           val n = callbacks.beginBroadcast()
-          for (i <- 0 to n -1) {
-            callbacks.getBroadcastItem(i).stateChanged(s, msg)
+          for (i <- 0 to n - 1) {
+            callbacks.getBroadcastItem(i).stateChanged(s, msg.substring(0, 64))
           }
           callbacks.finishBroadcast()
           state = s

src/main/scala/com/github/shadowsocks/Shadowsocks.scala

@@ -606,7 +606,11 @@ class Shadowsocks
 
   def deattachService() {
     if (bgService != null) {
-      bgService.unregisterCallback(callback)
+      try {
+        bgService.unregisterCallback(callback)
+      } catch {
+        case ignored: RemoteException => // Nothing
+      }
       unbindService(connection)
       bgService = null
     }