This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
All that you have to do is just edit your JAVA_HOME path by cutshorting it till just the javafolder ..like JDK
and that should do ... and eliminate your error !
I had the same error when is tried frist ... and then i figured that .. it was this mistake i was making ....!
I figuerd it out by opening the jacl2jython.sh script in text editor and then it was as simple ... so hope that help you too !