I installed WP in the root directory months ago and recently upgraded to 2.7. The root directory/url is: http://www.greggcountygop.com.
Today I went to install a second WP in a subdirectory: http://www.greggcountygop.com/youngrepublicans/
Install went fine. The two installs are setup with two different databases, each having their own unique username and password. In MySQL, each database has only one user assigned: each is a unique name.
However, now when I try to visit the root, it says "Error establishing a database connection." I didn't change anything for the root directory. I can access the subdirectory install.
What might have happened?