diff --git a/iiif-presentation-validator.py b/iiif-presentation-validator.py
index 2c2c550..5b33299 100755
--- a/iiif-presentation-validator.py
+++ b/iiif-presentation-validator.py
@@ -112,7 +112,8 @@ def check_manifest(self, data, version, url=None, warnings=[]):
                 okay = 1
             except Exception as e:
                 # Failed
-                print (e)
+                print ('Failed falidation due to:')
+                traceback.print_exc()
                 err = e
                 okay = 0