There are a lot of gluten-free bread mixes on the market from a number of different companies, but Bob's Red Mill is one brand that I see most often, as they carry it prominently at Whole Foods. Reading the packaging on some of their yeast mixes, I noticed that they gave instructions for making the dough in a bread machine and I couldn't help but wonder if the dough would develop properly under such conditions, as even though the yeast will thrive in the bread machine environment, the ingredients are quite unlike the typical flours used in bread. Odds are, they probably work out reasonably well or the company would not continue to instruct people to use the machines. If you want to make GF bread on a regular basis, however, you might want to consider switching to a machine that has an actual gluten-free cycle programmed in to it. The Breadman TR875 is the first one that I've heard of that is equipped with such a feature. The stainless steel machine can handle up to 2-pound loaves and also offers pasta, jam, and pizza-dough cycles.