Bullet Candy update 7 is now available. Also, it includes various compatibility fixes, so it should work on some previously non-compatible systems. The game can also be forced to render in DirectX mode, follow the instructions in the update folder if you need to do this.
Players who bought the game from my site can download the game from the last update email link i sent them. Mac Game Store players can get the game from thier original download link and Manifesto and Steam players can get the new update via the usual means.