muffin & bread mixes

[akstanl]

I have tried 2 packets of bread mix and 1 packet of Muffin Mix. None of them work.
I followed every step on the instructions but it's not cooked inside. The crust is okay but the inside is not cooked. It looks like a mashed-tofu.
What should I do?
Did I miss anything?
(1 packet of bread mix is going for AUD$20 here...about USD$14...)
Someone please help me?

I tried making the sourdough bread in the oven, it turned out as you described above, not cooked in the middle, doughy. So I borrowed my sister's bread machine and ran it on the regular cycle for 4 hours. It turned out perfect, however be prepared to scarf it down, it will get moldy in less than a week since there are no preservatives, and it's difficult to cut. I've found that I like the presliced country white bread much better than making it myself in the bread maker, and here in MN it's cheaper than buying the mix!! Go Figure!