Changing bookstyles during production

[cmcfall]

I have created a book in one bookstyle and would like to change it to another now that I have a better idea of the finished product. Is there an easy way to do this without re-creating the whole thing?

[cmcfall]

Okay, I see now that it is possible. My problem occurred trying to change it to the Vintage style. I cannot get the vintage style to load at all, not having problems with any other style. Any reason for this?