Hmm.. Not showing a stable version..
just a thought, have you verified that java is working correctly on your system?
i recently had to do a hot fix on my java for some off reason.
Now on MAC OSX I would say delete everything in Finder related to Osbot and start fresh.
MAC's can be finnicy when it comes to .jars :-/
I hope your situation gets resolved. Have you talked with Alek or Maldesto?