3D object from 2D layers

[donc61415489]

I am trying to create a 3D logo with text (or any shape) punched out.  Adobe provided the following instructions:

• Create text layer
• Convert text layer to shape
• Create oval shape layer
• merge shapes
• 3D extrude w/ layer

They also provided a .psd file with a 2D layer on a transparent background that looks like this:  . Performing a 3D extrusion from this works, but I can't reproduce the 2D layer. When I merge shapes the text disappears. Is there a missing step in Adobe's instructions? 

[Eugenio.NYC]

Hi

Create a text and covert it to shape

then create an oval over the text and select the folowwing option

[donc61415489]

That's great! It's a step that Adobe left out of their instructions. Any idea why that option doesn't seem to be available for custom shapes, or whether it can be?