From 527db105550ebe903a3c4829b9efadc1588d1dee Mon Sep 17 00:00:00 2001 From: Doug Blank <doug.blank@gmail.com> Date: Sun, 2 May 2010 13:46:23 +0000 Subject: [PATCH] Protect views with no histories svn: r15300 --- src/DisplayState.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/DisplayState.py b/src/DisplayState.py index 58618657b..dcb03f234 100644 --- a/src/DisplayState.py +++ b/src/DisplayState.py @@ -421,7 +421,8 @@ class DisplayState(gen.utils.Callback): the given handle. """ history = self.get_history(nav_type, nav_group) - history.push(handle) + if history: + history.push(handle) def set_sensitive(self, state): self.window.set_sensitive(state)