Try redownloading 4.4.4.

There was a period of about 5-10 minutes where it wouldn't have worked on OSX 10.1. We quickly replaced it with a working version.

FYI, at some not-too-distant-time in the future, we are going to have to drop support for 10.1. This is because Apple has not provided an implementation of Java 1.4 for OSX 10.1, and we need to begin using that version of Java to take advantage of newer features in Java.

10.2 and above support Java 1.4.