That's because of its strobe effects, which caused the clip to fail the Harding Test -- a guideline established to prevent TV images from triggering epileptic seizures.

However, the Happy-directed video is available on various online outlets, and Gnarls Barkley's Danger Mouse tells Billboard he's hopeful the situation can be resolved shortly.

"I don't know exactly what's going on, but we're having issues. I think [the video] is cool. It works for me. But I'm not necessarily that easily seasick," he says with a laugh. "We can't predict how people are going to interpret it." [SOURCE]

Labels: Gnarls Barkley