[Kireyo]

I took a quick look at the .ac file you posted. The TCE is not filled, as Andy said, you need to get the UV map right for it to work in SL, very simply put, in the TCE, when you click on surfaces and then select all, it has to look like a perfect green square, with no holes.
It looks like you started from a regular sphere. In this case it's better that you start from the sample sculpty-sphere (it comes with AC3D) because it already has a perfect SL UV map.

I've attached a quick 'n dirty version, so you can take a look at the TCE. If you export this one as a sculpty, it will look pretty much the same on SL as in AC3D.