diff --git a/python/RO/Wdg/LogWdg.py b/python/RO/Wdg/LogWdg.py
index 4c5241a..88f20a1 100755
--- a/python/RO/Wdg/LogWdg.py
+++ b/python/RO/Wdg/LogWdg.py
@@ -306,8 +306,11 @@ def isScrolledToEnd(self):
         # test two cases:
         # scrollPos[1] = 1.0: scrolled to end
         # scrollPos[1] = scrollPos[0]: window has not yet been painted
-        scrollPos = self.yscroll.get()
-        return scrollPos[1] == 1.0 or scrollPos[0] == scrollPos[1]
+        try:
+            scrollPos = self.yscroll.get()
+            return scrollPos[1] == 1.0 or scrollPos[0] == scrollPos[1]
+        except Tkinter.TclError:
+            return True
     
     def search(self, searchStr, backwards=False, doWrap=False, elide=True, noCase=False, regExp=False):
         """Find and select the next instance of a specified string.
diff --git a/python/RO/Wdg/StripChartWdg.py b/python/RO/Wdg/StripChartWdg.py
index e0116c6..9f4c429 100755
--- a/python/RO/Wdg/StripChartWdg.py
+++ b/python/RO/Wdg/StripChartWdg.py
@@ -410,7 +410,11 @@ def _redraw(self):
         """Redraw the graph
         """
         self.line2d.set_data(self._tList, self._yList)
-        if not self._wdg.winfo_ismapped():
+        try:
+            if not self._wdg.winfo_ismapped():
+                return
+        except Tkinter.TclError as e:
+            # This means the window was probably closed
             return
         if len(self._yList) > 0:
             # see if limits need updating to include last point