I attempted to get opera to run myself. If you run the following commands before starting opera it gets rid of the D-Bus warning:
Code:
eval $(dbus-launch --sh-syntax)
export BUS_SESSION_BUS_ADDRESS
export DBUS_SESSION_BUS_PID
Opera still doesn't run, though, and it then warns about "not sure how to check hw keyboard status" alongside the usual "undefined symbol" error.