Using Vcarve Pro 8.5

I trying to make a 1.5” round medallion (acrylic) with arched text at the top and bottom, and horizontal text in the center, all text is 0.2” high, and cut with a 20 digree V bit.

The preview only yields a few dots. Am I trying to do something that can’t be done?

I would surely like some help.

Thanks