I load a data set, do Heirarchical Clustering, Use Validation (Requires MeV + R), and MeV crashes. No error messages. I have R 2.9 installed (as recommended on the MeV + R website http://www.tm4.org/mev/node/199).
I don't know what JVM is for but it crashed with the original Mac setup. I installed Java 7 and it still crashes.
Thanks in advance,
I also had problems with MeV 4.8.1 and Mac OS X 10.8.4 (mostly crashed).
My solution was to remove everything and install MeV 4.5.1 and R 2.9.1.
Hope this helps,