Problem with export of gif & png transparencies

[Ron Duke]

I've tried All the different options on exporting a simple shape with a transparent background and depending on the options I select, I either get no transparency (a white background) or the shape itself becomes transparent.
Has anyone else had this problem. I'm not sure what to do about this.

Also, when I select True Color and Alpha for a transparency export, (gif or png), the Image A on the export screen shows up blank.??????

ron