Unable to access calendar, because the calendar server is not running.

Hello everyone.
I'm new in posts (not in read them) and I need some help.
This subject message appears when I try to access my iCal on Wiki Page.
We have here 2 Intel xServers, one with Web and features and other with Gateway and network management.
My Web Service, has Wiki, Blog, Calendar enable services, all up and running normally without errors, but the iCal I can't access showing that error on page.
I Installed the Mac OS Server Snow Leopard from the begin (formatting...), configured all things and ok.
But since starts the calendar was with that error.
The server is updated to 10.6.6.

I will really appreciate to be helped. Thanks from now!

Here is an iCal Log:

45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up root resource: <class 'calendarserver.provision.root.RootResource'>
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up time zone service resource: <class 'twistedcaldav.static.TimezoneServiceFile'>
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up WebCalendar resource: /usr/share/collaboration
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up WebAdmin resource
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up Timezone Cache
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Configuring authentication wrapper
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up service
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Logging via AF_UNIX: /var/run/caldavd.sock
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Configuring log observer: <twistedcaldav.accesslog.AMPCommonAccessLoggingObserver object at 0x1021b0b50>
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Adding SSL server at 127.0.0.1:8450
2011-01-14 10:45:13-0200 [-] [caldav-8016] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8016 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8016] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8451
2011-01-14 10:45:13-0200 [-] [caldav-8016] [-] twisted.web2.channel.http.HTTPFactory starting on 8016
2011-01-14 10:45:13-0200 [-] [caldav-8016] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8016] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Configuring SudoDirectoryService with file: /etc/caldavd/sudoers.plist
2011-01-14 10:45:13-0200 [-] [caldav-8009] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8009 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Configuring authentication for realm: /Search
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up scheme: wiki
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up scheme: digest
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up document root at: /Users/dincaoadm/Desktop/test
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up principal collection: <class 'twistedcaldav.directory.principal.DirectoryPrincipalProvisioningResource'>
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up calendar collection: <class 'twistedcaldav.static.CalendarHomeProvisioningFile'>
2011-01-14 10:45:13-0200 [-] [caldav-8009] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8444
2011-01-14 10:45:13-0200 [-] [caldav-8009] [-] twisted.web2.channel.http.HTTPFactory starting on 8009
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up root resource: <class 'calendarserver.provision.root.RootResource'>
2011-01-14 10:45:13-0200 [-] [caldav-8009] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [-] [caldav-8009] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up time zone service resource: <class 'twistedcaldav.static.TimezoneServiceFile'>
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up WebCalendar resource: /usr/share/collaboration
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up WebAdmin resource
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up Timezone Cache
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Configuring authentication wrapper
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Setting up service
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Logging via AF_UNIX: /var/run/caldavd.sock
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Configuring log observer: <twistedcaldav.accesslog.AMPCommonAccessLoggingObserver object at 0x1021b0b50>
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Adding SSL server at 127.0.0.1:8447
2011-01-14 10:45:13-0200 [-] [caldav-8013] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8013 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8013] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8448
2011-01-14 10:45:13-0200 [-] [caldav-8013] [-] twisted.web2.channel.http.HTTPFactory starting on 8013
2011-01-14 10:45:13-0200 [-] [caldav-8013] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8013] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [-] [caldav-8010] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8010 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8010] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8445
2011-01-14 10:45:13-0200 [-] [caldav-8010] [-] twisted.web2.channel.http.HTTPFactory starting on 8010
2011-01-14 10:45:13-0200 [-] [caldav-8010] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8010] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8015 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8450
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] twisted.web2.channel.http.HTTPFactory starting on 8015
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8015] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8012 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8447
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] twisted.web2.channel.http.HTTPFactory starting on 8012
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8012] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [-] [caldav-8014] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8014 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8014] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8449
2011-01-14 10:45:13-0200 [-] [caldav-8014] [-] twisted.web2.channel.http.HTTPFactory starting on 8014
2011-01-14 10:45:13-0200 [-] [caldav-8014] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8014] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))
2011-01-14 10:45:13-0200 [-] [caldav-8011] [-] [calendarserver.tap.caldav.CalDAVServiceMaker#info] Redirecting HTTP port 127.0.0.1:8011 to HTTPS port 127.0.0.1:8443
2011-01-14 10:45:13-0200 [-] [caldav-8011] [-] twext.web2.channel.http.HTTP503LoggingFactory starting on 8446
2011-01-14 10:45:13-0200 [-] [caldav-8011] [-] twisted.web2.channel.http.HTTPFactory starting on 8011
2011-01-14 10:45:13-0200 [-] [caldav-8011] [-] set uid/gid 93/93
2011-01-14 10:45:13-0200 [twistedcaldav.accesslog.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2011-01-14 10:45:13-0200 [-] [caldav-8011] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))