When I try to log into Jing, I get an error that "We think you're behind a proxy we're not able to detect. Please contact your network administrator." "Invalid XML data was returned when calling: Screencast.User.Getinfo". The school district I work for blocks the site screencast.com (IP: 10.58.156.93). Is that the only exemption I'll need to request or are there other servers that I'll need to be able to use Jing with my classes?