A new v6 beta version (v5.317) has been release for Mac at
http://www.graalonline.com/downloads/beta/Graal_mac.zip:
- true full screen mode, please test if this is working fine
- fixed some problems with gani script initialization (onPlayerEnters when re-entering a level)
- fixed update problems of gui graphics with grids
- for avoiding problems with the new particle engine you can specify emitter.particle.uniqueparticle = true; which will disable the optimized rendering and allow different text and images for each particle