diff --git a/src/core.py b/src/core.py
index 964414fc3..c5acf1bdc 100644
--- a/src/core.py
+++ b/src/core.py
@@ -315,9 +315,12 @@ class Manager:
         # Save the uploaded data from this session to the existing upload memory
         for unique_ID in self.unique_IDs.keys():
             # self.get_core_torrent_state purposefully not cached.
-            self.unique_IDs[unique_ID].uploaded_memory = \
+            try:
+                self.unique_IDs[unique_ID].uploaded_memory = \
                 self.unique_IDs[unique_ID].initial_uploaded_memory + \
                 self.get_core_torrent_state(unique_ID, False)['total_upload']
+            except AttributeError:
+                self.unique_IDs[unique_ID].initial_uploaded_memory = 0
 
     # Preference management functions