Enabling online mode prevents players from joining (a1.1.2_01)

Hi all!

I am attempting to set up a server for a1.1.2_01 (using server version a0.2.0, which is listed as compatible), however I have encountered an annoying issue.

When online mode is enabled, I am unable to connect with the error message `Took too long to log in.` On the server, the following message is given:

THE REPLY IS null
java.lang.NullPointerException: Cannot invoke "String.equals(Object)" because "<local4>" is null
    at dd.run(SourceFile:80)

However, disabling online mode seems to resolve this issue. I do not want to run this server in offline mode, as I plan on making it public (so I don't want that kind of vulnerability). Any help in resolving this issue would be greatly appreciated!