I have a similar problem. I’m using WP 3.2.1 and BP 1.3. If I use the default BP theme my main (and only) blog shows. However, if I use other themes, I am not able to get my posts to appear on my “Blog” page.
In the interim, I have put “Featured Category”, “Recent Posts” and “Recent Comments” on the sidebar of pages and posts on the front page to allow people access to blog posts.
I’m running WP 3.2.1 and BP 1.3. I have a different issue in the sense that my main blog is the only blog. The main blog shows in the default BP theme. However, it does not show on any of the other themes.
It is not showing even if I put my Settings->Reading->Static Page->Post Page is the “Blog” page.
How did you solve or fix this issue? Can you kindly explain?