Mamta Datwani - 2009-05-02

I created a Fat Jar using EasyEclipse, and it works fine on Windows. However, when I try to use it on  a Mac OSx V10.4, it won't launch.
I tried running it through the terminal on the MAC as well but it still wouldnt work.
The error I got in the console is:

Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file

I use EasyEclipse on Windows Vista, and I want to compile the jar so that it works on the Mac.
How can I make the Jar file and choose the right Compiler settings so that the jar file would work on the Mac?

Any help would be great. Thank you!