Since the update then then pushback for a update it seems nothing has been the same critical errors galore invalid session spam random disconnects and inject errors, have completely wiped wow and hb multiple times this week............
session invalid means that you are loosing connection to Hb servers
network issues if there is no firewall
[8:20:37 AM:013] System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host