Open the file: wavt_scripts_php.php included on your page.
Then find the line:
$knownDomsPat = "/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|cat|\w{2,2})$/";
and update it to:
$knownDomsPat = "/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|cat|solutions|\w{2,2})$/";