I have a similar issue. I am using headspace to set a different theme for my blog page. It works, but when i click on the Older posts link at the bottom of the first blog page it takes me to the second page and reverts back to the old theme? The url for the blog page is dev.drbabbel.com/blog/ and thats fine but the url for the second page of blog posts is dev.drbabbel.com/blog/page/2/ and that is where the theme reverts back to the old theme. How can i set this properly?
