diff --git a/phase_associator_wrapper.py b/phase_associator_wrapper.py
index 1b06b45..96f7b93 100644
--- a/phase_associator_wrapper.py
+++ b/phase_associator_wrapper.py
@@ -23,6 +23,8 @@ from PyOctoPhaseAssociation import main as phaseassoc
 
 
 def main(argv):
+    raise ValueError("Test error from branch experimental-test-live-code-editing")
+
     parser = argparse.ArgumentParser()
     parser.add_argument("qml_picks", help="Path to input file of type 'quakeml_seismogram_picks'")
     parser.add_argument("inventory", nargs='+', help="Paths to input files of type 'inventory'")