diff --git a/data/dbrepo/migrate.cfg b/data/dbrepo/migrate.cfg
index 78ae1b2..05903ba 100644
--- a/data/dbrepo/migrate.cfg
+++ b/data/dbrepo/migrate.cfg
@@ -17,4 +17,4 @@ version_table=migrate_version
 # entire commit will fail. List the databases your application will actually 
 # be using to ensure your updates to that database work properly.
 # This must be a list; example: ['postgres','sqlite']
-required_dbs=[]
+required_dbs=['postgres', 'sqlite']
diff --git a/data/dbrepo/versions/1/1.sqlite.downgrade.sql b/data/dbrepo/versions/1/1.sqlite.downgrade.sql
new file mode 100644
index 0000000..e69de29
diff --git a/data/dbrepo/versions/1/1.sqlite.upgrade.sql b/data/dbrepo/versions/1/1.sqlite.upgrade.sql
new file mode 100644
index 0000000..e69de29
diff --git a/gnuviechadmin/backend/settings.py b/gnuviechadmin/backend/settings.py
index ebf8420..08217ee 100644
--- a/gnuviechadmin/backend/settings.py
+++ b/gnuviechadmin/backend/settings.py
@@ -1,3 +1,4 @@
+# -*- python -*-
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2007, 2008 by Jan Dittberner.
@@ -23,13 +24,16 @@ import ConfigParser, os, string, logging.config
 
 # global settings which must not be user configurable
 required_version = 3
-dbschema = 'gva'
 
 # load user configuration
 config = ConfigParser.ConfigParser()
 config.readfp(open('gnuviechadmin/defaults.cfg'))
 config.read(['gnuviechadmin/gva.cfg', os.path.expanduser('~/.gva.cfg')])
 
+dbschema = None
+if config.get('database', 'uri').startswith('postgres://'):
+    dbschema = 'gva'
+
 def get_template_dir(dirname):
     """Returns the template directory for the given directory."""
     templatepath = config.get('common', 'templatedir')
diff --git a/gnuviechadmin/util/gpgmail.py b/gnuviechadmin/util/gpgmail.py
index 9964744..c3ddcab 100644
--- a/gnuviechadmin/util/gpgmail.py
+++ b/gnuviechadmin/util/gpgmail.py
@@ -1,6 +1,7 @@
-# -*- coding: UTF-8 -*-
+# -*- python -*-
+# -*- coding: utf-8 -*-
 #
-# Copyright (C) 2007 by Jan Dittberner.
+# Copyright (C) 2007, 2008 by Jan Dittberner.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -30,6 +31,8 @@ def send_mail(subject, text):
     """This method sends a mail with the given text and subject
     and signs it usign GnuPG. If a public key of the recipient is
     available the mail is encrypted."""
+    if not text.__class__.__name__ == 'str':
+        text = text.encode('ascii', 'replace')
     plain = core.Data(text)
     cipher = core.Data()
     c = core.Context()