Happy New Year! I just upgraded to SL from Leopard and I am having a bear of a time getting Calendar Server running again. In an effort to resolve my issues, I have deleted my old install and re-installed from trunk (build 4892), but even though the log seems to indicate that everything is working, when I try to connect I get no love - web access is denied due to an "internal service error," as is iCal access. When I run ./run, I get the following, which seems to show me that all is fine in CalServ land: 2010-01-02 00:42:31-0600 [-] [caldav-1] [-] [twext.internet.tcp#info] twext.web2.channel.http.LimitingHTTPFactory starting on 8443 2010-01-02 00:42:31-0600 [-] [caldav-1] [-] [twext.internet.tcp#info] twext.web2.channel.http.LimitingHTTPFactory starting on 8008 2010-01-02 00:42:31-0600 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('logs/caldavd.sock') PEER:UNIXSocket('')) 2010-01-02 00:42:31-0600 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('logs/caldavd.sock') PEER:UNIXSocket('')) 2010-01-02 00:42:31-0600 [-] [caldav-1] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('logs/caldavd.sock')) 2010-01-02 00:42:31-0600 [-] [caldav-0] [-] [twext.internet.tcp#info] twext.web2.channel.http.LimitingHTTPFactory starting on 8443 2010-01-02 00:42:31-0600 [-] [caldav-0] [-] [twext.internet.tcp#info] twext.web2.channel.http.LimitingHTTPFactory starting on 8008 2010-01-02 00:42:31-0600 [-] [caldav-0] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('logs/caldavd.sock')) But then I try to connect, and get logs like this, showing what appear to be two different failures and a third issue with the mail handling for iTIP: 2010-01-02 00:42:45-0600 [-] [caldav-0] Traceback (most recent call last): 2010-01-02 00:42:45-0600 [-] [caldav-0] File "/library/Twisted/twisted/internet/defer.py", line 184, in addCallbacks 2010-01-02 00:42:45-0600 [-] [caldav-0] self._runCallbacks() 2010-01-02 00:42:45-0600 [-] [caldav-0] File "/library/Twisted/twisted/internet/defer.py", line 326, in _runCallbacks 2010-01-02 00:42:45-0600 [-] [caldav-0] self.result = callback(self.result, *args, **kw) 2010-01-02 00:42:45-0600 [-] [caldav-0] File "/library/Twisted/twisted/web2/dav/method/get.py", line 57, in <lambda> 2010-01-02 00:42:45-0600 [-] [caldav-0] d.addCallback(lambda parent: parent.authorize(request, (davxml.Bind(),))) 2010-01-02 00:42:45-0600 [-] [caldav-0] File "/library/Twisted/twisted/internet/defer.py", line 832, in unwindGenerator 2010-01-02 00:42:45-0600 [-] [caldav-0] return _inlineCallbacks(None, f(*args, **kwargs), Deferred()) 2010-01-02 00:42:45-0600 [-] [caldav-0] --- <exception caught here> --- 2010-01-02 00:42:45-0600 [-] [caldav-0] File "/library/Twisted/twisted/internet/defer.py", line 749, in _inlineCallbacks 2010-01-02 00:42:45-0600 [-] [caldav-0] result = g.send(result) 2010-01-02 00:42:45-0600 [-] [caldav-0] exceptions.AttributeError: Deferred instance has no attribute 'send' 2010-01-02 00:42:45-0600 [-] [caldav-0] 2010-01-02 00:42:45-0600 [-] [caldav-0] [PooledMemCacheProtocol,client] Unhandled error in Deferred: 2010-01-02 00:42:45-0600 [-] [caldav-0] [PooledMemCacheProtocol,client] Unhandled Error 2010-01-02 00:42:45-0600 [-] [caldav-0] Traceback (most recent call last): 2010-01-02 00:42:45-0600 [-] [caldav-0] Failure: twisted.web2.http.HTTPError: <UnauthorizedResponse 401 You are not authorized to access this resource.> 2010-01-02 00:42:45-0600 [-] [caldav-0] 2010-01-02 00:43:01-0600 [-] [mailgateway] 2010-01-02 00:43:01-0600 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1']] Any advice would be greatly appreciated!