Hey, I thought I'd give a heads up to anyone else who might have this
problem. The compiler kept telling my that
becker.io did not exist.
So, I uncompressed my becker.jar file only to find no "io" folder.
Long story short, I downloaded an older version of the file (provided
below) and replaced my newer version. Everything works great now.
http://www.learningwithrobots.com/downloads/becker1.3.jar