Do not change directory on load

pronterface.py

@@ -479,7 +479,12 @@ class PronterWindow(wx.Frame,pronsole.pronsole):
         thread(target=self.skein_monitor).start()
         
     def loadfile(self,event):
-        dlg=wx.FileDialog(self,"Open file to print",style=wx.FD_OPEN|wx.FD_FILE_MUST_EXIST|wx.FD_CHANGE_DIR)
+        basedir="."
+        try:
+            basedir=os.path.split(self.filename)[0]
+        except:
+            pass
+        dlg=wx.FileDialog(self,"Open file to print",basedir,style=wx.FD_OPEN|wx.FD_FILE_MUST_EXIST)
         dlg.SetWildcard("STL and GCODE files (;*.gcode;*.g;*.stl;)")
         if(dlg.ShowModal() == wx.ID_OK):
             name=dlg.GetPath()