does anyone plays on Mac here? I downloaded the build and it does not open, I tried changing the extension(it is .app, even though it should be .dmg), nothing works for me :O I am kinda new to AVN's and maybe there is something I do not know yet. 
I use Mac and I think I understand your issue. Your Mac is probably extracting the file for you and then sending the original to the trash.
1 . Go to your trash and see if the original is there.
2. Restore it, then right click and choose 'Open with' and extract the file.
3. After it extracts and you click on it your Mac will try to verify the file and might say its not safe to open. You will have to Right click and select 'Open'.
If this doesnt' work Idk