[Zope] ECONNREFUSED in debug.log, can not log into zope

After setting up a new Zope (using the site-layout NZORedux) I can start zope, however I can not attach to it. the debug log has error as like follows: PROBLEM(100) zrpc:9529 CW: error connecting to ('localhost', 8001):ECONNREFUSED what can be the reason? what can I do to fix it? thanks for any feedback -- mit freundlichen Grüssen Robert Rottermann www.redCOR.ch