bug fix

src/callbacks.py

@@ -137,7 +137,7 @@ def tox_file_recv(window, tray):
         settings = Settings.get_instance()
         if file_type == TOX_FILE_KIND['DATA']:
             print 'file'
-            file_name = file_name[:file_name_size].decode('utf8')
+            file_name = file_name[:file_name_size]
             invoke_in_main_thread(profile.incoming_file_transfer,
                                   friend_number,
                                   file_number,

src/file_transfers.py

@@ -33,6 +33,7 @@ class ReceiveTransfer(FileTransfer):
     def __init__(self, path, tox, friend_number):
         super(self.__class__, self).__init__(path, tox, friend_number)
         self._file = open(self._path, 'wb')
+        self._file.truncate(0)
 
     def write_chunk(self, position, data):
         if data is not None: