The feeds were probably down...it should be working again now, right?
No... still not working.
I guess it must be some server config, running on localhost using wamp works just fine.
Did you do something with modMenu? Because the error means it cannot get the 'profile' modMenu...which is weird, this is very basic MODX stuff. Try to create a new admin user and login using that one, will this fix anything?
Other then that, I advice you to update MODX (reinstall the current version on top of what you are running now, even if it's the same version).