Getting an error when starting WAMP - “VirtualHost *:80 — mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results”

NameVirtualHost *
<VirtualHost *:80>
    ServerName dev.blog.slaven.net.au
    ServerAlias dev.blog.slaven.net.au
    ServerAdmin [email protected]
    DocumentRoot "c:/Project Data/OtherProjects/slaven.net.au/blog/"
    ErrorLog "logs/blog.slaven.localhost-error.log"
    CustomLog "logs/blog.slaven.localhost-access.log" common

    <Directory "c:/Project Data/OtherProjects/slaven.net.au/blog/">
        Options Indexes FollowSymLinks MultiViews
        AllowOverride all
            Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>

NameVirtualHost *:80