Nancy, it might be a simplistic question, but is the correct layer active. For the Clip-to-it to work, you have to have the paper (or photo) layer active, which should be just above the shape. If you try to convert the shape to a mask group (doing part of the job of the Clip-to-it manually), then you start with the shape layer as active. Maybe you have the shape layer active, while it should be the layer above it?
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