Dave, I gave your file a try, but didn't get any OOM errors. I'm currently running a 32bit machine. Sometimes I wonder if 64bit machines have more trouble with OOMs running 32bit TurboCAD. The attached image is the resulting render.
I know the background and cloth are a bit lame, but this was just a test.
I changed up the cubical map a bit to help brighten up the glass. When using a cubical map from Softbox and rendering glass or surfaces with mirror like finishes it's a good idea to set the "Reflected shader" and "Refracted shader" to "Mixed" and use "Plain" and "Environment" as sub-shaders. With that setup you can mix in something other than a black background for reflections. I used white which helps lighten up the glass while still reflecting the studio lights. You can open up the RSE to see those changes.
You should be able to render the wine glass as is with Softbox installed on a 64bit machine. The attached file uses "Draft No Shadows" for Luminance. It'll render quickly for testing that way.
This is a Raytrace Full render.