I wonder if you happened to be doing this right when our server provider (Rackspace) was performing maintenance. See details from Rackspace: https://community.rackspace.com/general/f/53/t/4978
Yesterday, we notified our hosting customers that during brief periods between 11:00 PM MST March 2, 2015 to 3:00 AM MST on March 3, 2015 some of the servers we use would be out for a few minutes to perform scheduled maintenance.
The timing of your post corresponds pretty closely to this.
Please try again and see if the issues were due to correspondence of your working with SSI Web hosting and this scheduled maintenance window.