SignalR error: $.connection.hub.start() the connection has not been fully initialized use start().done()

i'm using SignalR for real time notification in my web application.

But when i run the application i got error in javascript file

(SignalR.AspNet.1.0.0-rc2.min.js),

i.e $.connection.hub.start() the connection has not been fully initialized use start().done().

but i also use $.connection.hub.start().done(); then also i got same error in SignalR.AspNet.1.0.0-rc2.min.js that javascript file.