I cannot install Accountz on Ubuntu 12.04 - Error unpacking jar files

I have tried to install Accountz by running the install script and I get the following message
Error unpacking jar files. Aborting.
You might need administrative priviledges for this operation.

This is a problem on 64 bit systems. I noticed it on Ubuntu 12.04 on a clean install.

To make this work you can install the 32 bit libraries by running the following command line in the terminal.

sudo aptitude install ia32-libs

Then rerun the Accountz install script. It should work OK.