Clipping Out Shapes Problem

I’m trying to replicate the effect shown in this tutorial on the Wiki:

http://wiki.blender.org/index.php/Tutorials/Textures/Use_Alpha_for_Object_Transparency

but I keep getting the effect that not only is the background transparent, the render goes all the way back to the background, cutting through the object that’s supposed to be catching the shadow. Any ideas of what parameter is getting odd on me?
Thanks in advance…

Attachments


Once again, I’ve solved my own problem the minute I posted. Didn’t work for the preceding 24 hours, but the minute I posted…
“Ray Transp” (bang goes forehead on desk)
“Ray Transp” (bang goes forehead on desk)
“Ray Transp” (bang goes forehead on desk)…