I'm not an OSX guy, but I **believe** EPIC works on earlier 3.0 versions such as M8 maybe. I believe there was something "surprising" in the latest version of Eclipse that caused some breakage. I am using 2.1 so don't pay much attention to the 3.0 discussions. The EPIC home page does have some forums at:

http://sourceforge.net/forum/?group_id=75859

You might find better info there...