Hi,
I found the following:
Fresh vCO 5.5.1 Appliance. When you set in the configuration Webpage Network to the IP of the VM and then restart the the vCO server the main webpage (and also all services dont come up). Reverting back to IP 0.0.0.0 and restarting clean teh problem up again.
locking at the log I see the following when ctrying to connect to http://[vco ip] (not ssl)
2014-05-02T13:47:15+00:00 APPLIANCE-SDCT04 lighttpd[6893]: (/build/mts/release/bora-1191928/vadk/src/vami/apps/lighttpd/1.4.29/src/mod_proxy.c.1019) establishing connection failed: Connection refused
2014-05-02T13:47:15+00:00 APPLIANCE-SDCT04 lighttpd[6893]: (/build/mts/release/bora-1191928/vadk/src/vami/apps/lighttpd/1.4.29/src/mod_proxy.c.919) proxy-server disabled: 127.0.0.1 8280 7
2014-05-02T13:47:15+00:00 APPLIANCE-SDCT04 lighttpd[6893]: (/build/mts/release/bora-1191928/vadk/src/vami/apps/lighttpd/1.4.29/src/mod_proxy.c.1327) no proxy-handler found for: /vco/
2014-05-02T13:47:21+00:00 APPLIANCE-SDCT04 lighttpd[6893]: (/build/mts/release/bora-1191928/vadk/src/vami/apps/lighttpd/1.4.29/src/mod_proxy.c.1372) proxy - re-enabled: 127.0.0.1 8280