.isEmoji throws Lambda errors

[ALEEF02]

Calling .isEmoji on a string returns me the following error and stack trace:

java.lang.NoClassDefFoundError: Could not initialize class net.sf.cglib.proxy.Enhancer
        at ch.lambdaj.proxy.ProxyUtil.createEnhancer(ProxyUtil.java:89)
        at ch.lambdaj.proxy.ProxyUtil.createProxy(ProxyUtil.java:49)
        at ch.lambdaj.function.argument.ArgumentsFactory.createPlaceholder(ArgumentsFactory.java:52)
        at ch.lambdaj.function.argument.ArgumentsFactory.registerNewArgument(ArgumentsFactory.java:45)
        at ch.lambdaj.function.argument.ArgumentsFactory.createArgument(ArgumentsFactory.java:39)
        at ch.lambdaj.function.argument.ArgumentsFactory.createArgument(ArgumentsFactory.java:31)
        at ch.lambdaj.Lambda.on(Lambda.java:44)
        at emoji4j.EmojiUtils.getEmoji(EmojiUtils.java:40)
        at emoji4j.EmojiUtils.isEmoji(EmojiUtils.java:60)
        at Allegiance.util.DisUtil.isEmote(DisUtil.java:431)