[Can't join my Tekkit server]

bump, I really need help.

[Can't join my Tekkit server]

I made a Tekkit 2.1.1 server but I can't join it with the tekkit launcher, I can't even find 2.1.1 on there. Can anyone help? The server is working but I can't log in it just says "Internal Exception: blah blah blah"

[Tekkit Launcher Problem]

I got the Tekkit Launcher and I can't play in 2.1.1, I go to options and click choose version thing, and theres no 2.1.1, only 2.1.0, 3.0.1 ext; can anyone help?