fixed problem with path

1 files changed, 1 insertions, 1 deletions

diff --git a/turtleblocks.py b/turtleblocks.py
index ce1e5f5..4f0c56c 100755
--- a/turtleblocks.py
+++ b/turtleblocks.py
@@ -702,7 +702,7 @@ Would you like to save before quitting?'))
 
     def _get_levels(self):
         ''' Look for level files in lessons directory. '''
-        levels = glob.glob(os.path.join(activity.get_bundle_path(),
+        levels = glob.glob(os.path.join(self._get_execution_dir(),
                                         'challenges', '*.svg'))
 
         level_files = []