Issue with "Page Not Found - No page could be found at this address" on the "Blog" link. Using site map I can get to the sub-pages "My First Blog Post" and "Adding A New Blog Post" with no problems. These are the pages that came installed on my theme.

I have enabled pretty urls and corrected coding issue there. Prior to this I was getting a 500 error instead of the page not found (not sure if this is helpful to diagnose this issue). Prior to enabling Pretty Url's the error was:

Internal Server Error
> The server encountered an internal error or misconfiguration and was unable
> to complete your request.
>
> Please contact the server administrator, webmaster@watsonmediamarketing.com
> and inform them of the time the error occurred, and anything you might have
> done that may have caused the error.
>
> More information about this error may be available in the server error log.
>
> Additionally, a 404 Not Found error was encountered while trying to use an
> ErrorDocument to handle the request.

Why can the blog page not be found but all other pages work fine?

My web address is: www.www.watsonmediamarketing.com... and I use Dreamhost