All I did was download the new launcher (uncheck everything else in the torrent except that), delete the old launcher in my WoW-Mania install folder, and replaced it with the updated one. That worked for me.

That fixed it! Thanks!

Hmm... I think something is wrong with the launcher, because I can login if I use WoW-Mania.exe directly.

Is anyone else having issues logging in? The launcher says the server is offline.