Don't set if we've been popped (#175773)

1 files changed, 3 insertions, 2 deletions

diff --git a/text.py b/text.py
index 1fad4080b..14c23a6bc 100644
--- a/text.py
+++ b/text.py
@@ -119,8 +119,9 @@ class ProgressWindow:
         self.scale = None
 
     def set(self, amount):
-        self.scale.set(int(amount))
-	self.screen.refresh()
+        if self.scale:
+            self.scale.set(int(amount))
+            self.screen.refresh()
 
     def refresh(self):
         pass