fix blue screen in some conditions

[enigma2.git] / lib / python / Screens / ChannelSelection.py

diff --git a/lib/python/Screens/ChannelSelection.py b/lib/python/Screens/ChannelSelection.py
index d8aa39d45e3f2c456d6661a84b3be46c3a6f87b3..8d0cdc5428f3d266b0bc2a602546ee5c7e40545a 100644 (file)
--- a/lib/python/Screens/ChannelSelection.py
+++ b/lib/python/Screens/ChannelSelection.py
@@ -439,8 +439,8 @@ class ChannelSelectionBase(Screen):
 
                self.servicePathTV = [ ]
                self.servicePathRadio = [ ]
-               self.servicePath = None
-               
+               self.servicePath = [ ]
+
                self.mode = MODE_TV
 
                self.pathChangedDisabled = False
@@ -873,18 +873,19 @@ class ChannelSelection(ChannelSelectionBase, ChannelSelectionEdit, ChannelSelect
                        self.session.nav.playService(nref)
                self.saveRoot()
                self.saveChannel()
-               tmp=self.servicePath[:]
-               tmp.append(nref)
-               try:
-                       del self.history[self.history_pos+1:]
-               except:
-                       pass
-               self.history.append(tmp)
-               hlen = len(self.history)
-               if hlen > HISTORYSIZE:
-                       del self.history[0]
-                       hlen -= 1
-               self.history_pos = hlen-1
+               if self.servicePath is not None:
+                       tmp=self.servicePath[:]
+                       tmp.append(nref)
+                       try:
+                               del self.history[self.history_pos+1:]
+                       except:
+                               pass
+                       self.history.append(tmp)
+                       hlen = len(self.history)
+                       if hlen > HISTORYSIZE:
+                               del self.history[0]
+                               hlen -= 1
+                       self.history_pos = hlen-1
 
        def historyBack(self):
                hlen = len(self.history)