Are you using a polygon plane or an Image Plane. If its an image plane then you need to open up the attributes and set it to be able to be viewed from all cameras.
Chris (formerly R@nSiD)
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When the power of love overcomes the love of power the world will truely know peace - Jimmy Hendrix
Winner SM VFX Challenge 1
3rd Place SM SteamPunk Challenge (May 2007)