Imported Tiff Sequence Locking Up Camera View

[theresekim]

Hello,
I've been trying to add an Apple Motion-3 generated tiff sequence (of a white sunburst) into a Shake multiplane composite. The Motion sequence was exported with color + alpha. But for some reason, the tiff sequence locks up the main camera view. I can't see any of the layers in front of or behind the image(s)--only a black background. In other views (eg. Perspective, Front, Side), I can see it.

I've uploaded screen captures of the Shake setup and Motion export settings for the tiff sequence. Any insight would be appreciated.

Thanks!
Therese