Sorry, I'm newbie too.. I got confused also the first time, then I realized that what I wanted was just a server not a protocol (in my case a SOAP one). But then I found the way things are explained is running your server as a regular python script, but that prevents you from taking advantage from the facilities given by running your service like e.g. twistd -f myserver.tap. So I realized that what I really need is an Application so I can have a tap file. Everything seems easy but then while following the examples (the last one in Creating XML-RPC Servers and Clients - modified to get a tap file) I get an unexpected error. I'm using Twisted 1.0.7 with SOAPpy 0.10.2 and python 2.3 on windows 2000 the code is a bit modified, I removed the quoters logic and changed the last line from: application.run(save=0) ---------> application.save("start") in order to get a tap file <code> from twisted.web import soap, xmlrpc, resource, server class XMLRPCQuoter(xmlrpc.XMLRPC): def xmlrpc_quote(self): return 'Hola' class SOAPQuoter(soap.SOAPPublisher): def soap_quote(self): return 'Hola' def main(): from twisted.internet.app import Application app = Application("xmlrpc") root = resource.Resource() root.putChild('RPC2', XMLRPCQuoter()) root.putChild('SOAP', SOAPQuoter()) app.listenTCP(7080, server.Site(root)) return app application = main() if __name__ == '__main__': application.save("start") </code> I can't find what is going wrong here, this is the log I'm getting when I try to run xmlrpc-start.tap D:\Python23\Lib\site-packages>twistd -f xmlrpc-start.tap 2003/09/18 20:08 Hora de verano de MÚxico [-] Log opened. 2003/09/18 20:08 Hora de verano de MÚxico [-] twistd 1.0.7 (D:\PYTHON23\python.e xe 2.3.0) starting up 2003/09/18 20:08 Hora de verano de MÚxico [-] reactor class: twisted.internet.de fault.SelectReactor 2003/09/18 20:08 Hora de verano de MÚxico [-] Loading xmlrpc-start.tap... 2003/09/18 20:08 Hora de verano de MÚxico [-] Warning! Loading from __main__: X MLRPCQuoter 2003/09/18 20:08 Hora de verano de MÚxico [-] Traceback (most recent call last): 2003/09/18 20:08 Hora de verano de MÚxico [-] File "D:\PYTHON23\Lib\site-packa ges\twisted\scripts\twistd.py", line 317, in runApp 2003/09/18 20:08 Hora de verano de MÚxico [-] application = loadApplication( config, passphrase) 2003/09/18 20:08 Hora de verano de MÚxico [-] File "D:\PYTHON23\Lib\site-packa ges\twisted\scripts\twistd.py", line 210, in loadApplication 2003/09/18 20:08 Hora de verano de MÚxico [-] return decode(filename, data) 2003/09/18 20:08 Hora de verano de MÚxico [-] File "D:\PYTHON23\Lib\site-packa ges\twisted\scripts\twistd.py", line 188, in decode 2003/09/18 20:08 Hora de verano de MÚxico [-] application = pickle.loads(dat a) 2003/09/18 20:08 Hora de verano de MÚxico [-] AttributeError: ('Ephemeral instan ce has no __call__ method', <twisted.persisted.styles.Ephemeral instance at 0x00 FEB580>, ()) 2003/09/18 20:08 Hora de verano de MÚxico [-] Failed to load application: ('Ephe meral instance has no __call__ method', <twisted.persisted.styles.Ephemeral inst ance at 0x00FEB580>, ()) 2003/09/18 20:08 Hora de verano de MÚxico [-] Traceback (most recent call last): File "D:\PYTHON23\scripts\twistd.py", line 32, in ? run() File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 4 48, in run runApp(config) --- <exception caught here> --- File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 3 17, in runApp application = loadApplication(config, passphrase) File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 2 10, in loadApplication return decode(filename, data) File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 1 88, in decode application = pickle.loads(data) exceptions.AttributeError: ('Ephemeral instance has no __call__ method', <twisted.persisted.styles.Ephemeral instance at 0x00FEB580>, ()) Failed to load application: ('Ephemeral instance has no __call__ method', <twist ed.persisted.styles.Ephemeral instance at 0x00FEB580>, ()) 2003/09/18 20:08 Hora de verano de MÚxico [-] after that it just return to the prompt. any help would be really appreciated. thanks _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963