--- a/editors/ResourceEditor.py	Thu Oct 04 11:25:42 2018 +0300
+++ b/editors/ResourceEditor.py	Thu Oct 04 12:07:16 2018 +0300
@@ -27,6 +27,7 @@
 import wx
 import wx.lib.buttons
 import wx.grid
+from six.moves import xrange
 
 from graphics.GraphicCommons import REFRESH_HIGHLIGHT_PERIOD, ERROR_HIGHLIGHT
 from controls import CustomGrid, CustomTable, DurationCellEditor