diff -r 3cc6154b94a3 -r 9ca33768473c server/checkintegrity.py
--- a/server/checkintegrity.py	Mon Sep 14 11:15:47 2015 +0200
+++ b/server/checkintegrity.py	Mon Oct 12 10:53:35 2015 +0200
@@ -209,7 +209,7 @@
                                 '  WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid) '
                                 'ORDER BY e.eid')
     for row in cursor.fetchall():
-        sys.stderr.write(msg % row)
+        sys.stderr.write(msg % tuple(row))
     if fix:
         cnx.system_sql('INSERT INTO is_relation (eid_from, eid_to) '
                            'SELECT e.eid, s.cw_eid FROM entities as e, cw_CWEType as s '
@@ -223,7 +223,7 @@
                                 '  WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid) '
                                 'ORDER BY e.eid')
     for row in cursor.fetchall():
-        sys.stderr.write(msg % row)
+        sys.stderr.write(msg % tuple(row))
     if fix:
         cnx.system_sql('INSERT INTO is_instance_of_relation (eid_from, eid_to) '
                            'SELECT e.eid, s.cw_eid FROM entities as e, cw_CWEType as s '