A Register site question

[Orcx]

Ok I have the site up and everything but when I try to add a account. Then shows at the top
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in C:\wamp\www\index.php on line 480

So I went to my folder. I found that the line is
$logincheck = mysql_num_rows($uniqueuser);
So my question being does anyone know how to fix this error?

[Tankotron]

prob need to reinstall wamp, or update it

[*Alexz*]

did you try deleting that i think thats what i did with mine