Error and difficulty

[skankarella]

When I go to see the memberlist for my forum page I get::
Could not query users

DEBUG MODE

SQL Error : 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4

SELECT username, user_id, user_viewemail, user_posts, user_regdate, user_from, user_website, user_email, user_icq, user_aim, user_yim, user_msnm, user_avatar, user_avatar_type, user_allowavatar FROM nmaforum_users WHERE user_id <> -1 ORDER BY user_regdate ASC LIMIT 0,

Line : 157
File : memberlist.php
And also I have some members who registered but I did not get to let them on like activate their accounts and someone who did get on cant see any of the threads or topics..?? what do I do