I recently purchased a retina iMac and hooked up my trusty eyetv 250 plus. The live tv window will not show any video or produce any audio. That is, until I turn off all of my bluetooth devices (keyboard and trackpad). Then, the eyetv works perfectly. Is there anything I could do to make both bluetooth and the eyetv work? (BTW, the eyetv worked fine on my previous iMac (late 2009) with the same bluetooth devices.) Thank you!