The back-end will not load because it says it could not find wp-load.php

When I try to go to the admin panel, it tells me:

Could not find wp-load.php

I checked the location of the file, and it is in the root.

You can see the error here:

http://realtalkblogs.com/wp-admin/

PLease help and quickly! My client is getting real up-tight and I do not know what to do!

Thanks!