Angrybots Demo is NGUI-proof?

[Screenhog]

I tried adding a GUI to Angrybots as a test environment for something. However, it doesn't seem to work. For instance, adding a button will make the button show up fine, but when a mouse-over happens, or the button is clicked, the button shows no response. In fact, I tested "UICamera.hoveredObject", and even when I'm over a button, it shows up as "null".

Anyone have an idea why this is happening? Is something within Angrybots disabling mouse functions on purpose?

[ArenMook]

Physics properties, raycast hit triggers must be on.

[Screenhog]

Once again, you prove your tech support awesomeness about NGUI and Unity. Worked perfectly. Thanks!