diff -r ce504d23edf7 -r 3eb8d65824f5 devtools/__init__.py
--- a/devtools/__init__.py	Thu Sep 19 18:11:12 2013 +0200
+++ b/devtools/__init__.py	Fri Sep 06 11:01:20 2013 +0200
@@ -288,8 +288,11 @@
 
         The function create it if necessary"""
         backupdir = join(self.config.apphome, 'database')
-        if not isdir(backupdir):
+        try:
             os.makedirs(backupdir)
+        except:
+            if not isdir(backupdir):
+                raise
         return backupdir
 
     def config_path(self, db_id):