this is a wargaming server issue for NA and SA i doubt it has anything to do with the aslains modpack. the SA server keeps dropping and i guess it's locking people unto that server and it's not recovering. from what i'm reading in the forum that's what i am gathering as i am having the same issue.
http://forum.worldoftanks.com/index.php?/topic/643346-the-session-on-another-server-is-incomplete/