garageCube

I've tested the RC1 on a Mac Pro End 2013, 3,5 GHz 6 Core Intel Xeon E5, 16 GB RAM, AMD FirePro D700.
If I click the most of materials the program crashes.

On a MacBook Pro End 2011, 2,4 GHz Intel core i7, 8 GB RAM, AMD Radeon HD 6770M 1024 MB everything works fine.

That's weird. What version of OSX ?

The problem will be solved in next release. Inbetween you can just get an audio input on the computer (plug a USB microphone or install SoundFlower) and it will fix. We haven't seen that because we always have audio devices on out test machines.
So, thanks for the report !