Resolved Error: authentication to lilypad failed

after updating to build 77 for 1.6.4 everyone trying to connect through our proxy is getting
Error: authentication to lilypad failed
no changes were made other than switching out the jar file for the proxy server and updating bukkitconnect. the ip's are all still the same, the allinone.conf has not been changed at all and everything was working fine until this update. People are still logging in through the proxy, not trying to direct connect to any servers.

any clue how to fix this?

Update: updated to build number 78 of the allinone, same error.

I second this error. Please note that besides this message on login attempt, there are no other error messages/stack traces within the console.

craftbukkit, with multicraft

thank you for your effort into looking into this It is greatly appreciated!

Having the same error here too.

Thank you. Does this mean that it's been tested in Spigot?

All right, thank you. I'll report this to the Bukkit development team if I can.

I use spigot but i'm still getting the error.

If you clicked the link, you'll see Coelho already reported it directly to bukkit.

I've tried the latest version of spigot and v78 of lilypad. No luck though.