Kryonet Registering Classes

I’m pretty deep into my project at this point, yet I’ve come across an issue with registering a class.


Mon Mar 03 10:22:00 EST 2014 ERROR:java.lang.IllegalArgumentException: Class is not registered: org.newdawn.slick.Animation$Frame
Note: To register this class use: kryo.register(org.newdawn.slick.Animation$Frame.class);

When I attempt to register: Serializer.register(org.newdawn.slick.Animation$Frame.class); I have the following syntax error: cannot be referenced using its binary name.

I realize there is something wrong with the ‘$’ character and Frame, yet I don’t know what to do. I’ve tried registering just register(org.newdawn.slick.Animation.class); yet the issue still remains.

Additional Information:
The new Packet I’ve created contains a SpriteSheet and Animation variable.

Any thoughts on this?!
Thanks.