I currently have a multisite installation with 5 blogs and everything was working fine until about 2 hours ago. Now I am logged in as a network admin, but I can't access the network admin dashboard or the dashboard of my main blog. All the other dashboards seem ok.
On Chrome I get the following error when trying to access either of the dashboards:
The website encountered an error while retrieving http://www.astromono.com/wp-admin/network/. It may be down for maintenance or configured incorrectly.
Safari and Firefox simply stay on a blank page with no error.
What could be causing this all of a sudden?