diff -r b511cab580eb -r 616f86c13443 runtime/ServicePublisher.py
--- a/runtime/ServicePublisher.py	Mon Nov 21 11:40:29 2011 +0100
+++ b/runtime/ServicePublisher.py	Mon Nov 21 15:18:51 2011 +0100
@@ -44,7 +44,7 @@
         self.name = name
         self.port = port
         # No ip params -> get host ip
-        if ip == "":
+        if ip is None:
             ip = self.gethostaddr()
 
         print "My IP is :"+ip