I tried building helm with some examples. Unfortunately, whether it's an example with a red square, or the one with controls, I am only getting a black window.
A thing that may be worth noting is that I'm running helm in a virtual machine. However the engine is only 2d and I don't think it's using any hardware acceleration (correct me if I'm wrong), so it shouldn't be a problem.
Is this a known problem? Or perhaps can someone offer a solution?
In case that matters, I'm running it under Ubuntu 14.10 (in a virtual machine).