anallawalla - 1:44 am on Dec 5, 2012 (gmt 0)

Okay - if you're doing a completely separate install, make sure it's in a directory at the same level as the main and NOT in a sub-directory of the main installation.

I don't follow. The "same level" would be another subdomain, e.g. blog.example.com?

If the main WP site is at www.example.com then I have plenty of live examples of a second WP install at www.example.com/blog. This happens where the main site is built with pages, i.e. not as a blog, but the template for that site uses posts for something else, e.g. elements on a slider. I also have come across a situation where the additional WP installs are needed to keep users separate, to keep plugins separate, different theme, etc