send error message to stderr instead of stdout
diff --git a/planetstack/core/models/plcorebase.py b/planetstack/core/models/plcorebase.py
index c6fc5be..ec79419 100644
--- a/planetstack/core/models/plcorebase.py
+++ b/planetstack/core/models/plcorebase.py
@@ -1,5 +1,6 @@
 import datetime
 import os
+import sys
 from django.db import models
 from django.forms.models import model_to_dict
 from django.core.urlresolvers import reverse
@@ -9,7 +10,7 @@
     # This is a no-op if observer_disabled is set to 1 in the config file
     from observer import *
 except:
-    print "import of observer failed! printing traceback and disabling observer:"
+    print >> sys.stderr, "import of observer failed! printing traceback and disabling observer:"
     import traceback
     traceback.print_exc()