diff --git a/src/calibre/gui2/auto_add.py b/src/calibre/gui2/auto_add.py
index b200522fa4..3ce4cfe554 100644
--- a/src/calibre/gui2/auto_add.py
+++ b/src/calibre/gui2/auto_add.py
@@ -221,7 +221,8 @@ class AutoAdder(QObject):
                 os.remove(paths[0])
                 self.worker.staging.remove(fname)
             except:
-                pass
+                import traceback
+                traceback.print_exc()
             count += num
 
         if duplicates: