diff --git a/force_bdss/bdss_application.py b/force_bdss/bdss_application.py
index dd26fa617daaf027842c18577e24987d026b966d..f49d5f109bdd14e7456ed9092be5da52a1cd0e9f 100644
--- a/force_bdss/bdss_application.py
+++ b/force_bdss/bdss_application.py
@@ -9,7 +9,7 @@ from force_bdss.bundle_registry_plugin import BundleRegistryPlugin
 from force_bdss.core_evaluation_driver import CoreEvaluationDriver
 from force_bdss.core_mco_driver import CoreMCODriver
 
-from traits.api import Unicode, Bool, Instance
+from traits.api import Unicode, Bool
 
 
 class BDSSApplication(Application):
diff --git a/force_bdss/io/workflow_writer.py b/force_bdss/io/workflow_writer.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391