[calculus]

I had so many problems due to bytecode enhancement throwing raging ClassCastExceptions that I'll not even try version 2.

From now, my new projects are in JEE6.

[pvillega]

Play 2 is not using that "magic" anymore, so you won't hit that problem (which, on the other hand, wasn't 'too' common).

Give it a try. It's worth it, honestly.