diff --git a/oml/commands.py b/oml/commands.py
index d147b2e..25e1fa8 100644
--- a/oml/commands.py
+++ b/oml/commands.py
@@ -134,7 +134,7 @@ def command_postupdate(*args):
         print('usage: -o oldversion -n newversion')
         sys.exit(1)
     if old <= '20140521-65-e14c686' and new > '20140521-65-e14c686':
-        if not os.path.exists(settings.db_path):
+        if not os.path.exists(settings.db_path) and sys.platform != 'win32':
             r('./ctl', 'setup')
     import setup
     setup.upgrade_db(old, new)
diff --git a/oml/item/icons.py b/oml/item/icons.py
index 0270cb1..be86281 100644
--- a/oml/item/icons.py
+++ b/oml/item/icons.py
@@ -140,7 +140,7 @@ def get_icons_db_path():
     import settings
     import shutil
 
-    library = os.path.expanduser(settings.preferences['libraryPath'])
+    library = os.path.normpath(os.path.expanduser(settings.preferences['libraryPath']))
     metadata = os.path.join(library, 'Metadata')
     icons_db_path = os.path.join(metadata, 'icons.db')
     if os.path.exists(os.path.dirname(library)):