i have installed java 2 jdk1.4 and python 2.2. when i tried to install jython-21 i got the following error. can u help me in resolving it.
D:\Downloads\Software\jython-21>java jython-21
try path D:\Downloads\Software\jython-21\
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.zip.ZipFile.<init>(ZipFile.java:127)
        at jython-21.openArchive(Install.java:162)
        at jython-21.<init>(Install.java:109)
        at jython-21.main(Install.java:345)
can not open archive
can not read from archive
can not load class  net.sourceforge.liftoff.installer.source.ResURLFactory :
.lang.ClassNotFoundException: net.sourceforge.liftoff.installer.source.ResUR
thanx and regards
R Vijay Anand