That might be the problem. You need to get WPMU working before worrying about BuddyPress.
Looking at the URL, it thinks you are trying to register a new hosted blog at “http://waapsols.com/”.
When you installed WPMU, in the installation screen it asks you for a server name to use. What did you enter? I am guessing you entered your server’s IP address?
If that’s the case, delete .htaccess and wp-config.php and drop the database, and try reinstalling, but enter “waapsols.com” during the installation.
