Difficulty in using java with pp4

Hi,

I have difficulty in using ppower4 from terminal as well as from Maarten's
applescript.  I get the following error message for terminal invocation:

Exception in thread "main" java.util.zip.ZipException: error in opening
zip file
        at java.util.zip.ZipFile.open(Native Method)
        at java.util.zip.ZipFile.<init>(ZipFile.java:112)
        at java.util.jar.JarFile.<init>(JarFile.java:117)
        at java.util.jar.JarFile.<init>(JarFile.java:55)

Can someone please help?  I have the following java installed.  I am using
Mac OSX 10.2.x:

bash-2.05a$ java -version
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-69.1)
Java HotSpot(TM) Client VM (build 1.4.1_01-24, mixed mode)

Thanks.

Kannan.
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