Internal Server Error Help Please

[marcus1lane]

I am not sure what went wrong actually. I was on my forum checking on the who's online at the very bottom and it said this

Database error

Database error in vBulletin 4.1.4:

Invalid SQL:

	SELECT IF(userid > 0, 1, 0) as isuser, COUNT(session.userid) as online_users
	, user.market_username_color, 
user.market_username_glow, market_username_subscript
	FROM session as session
	
	WHERE session.lastactivity > 1311555908
	
	
	
	GROUP BY isuser;

MySQL Error   : Unknown column 'user.market_username_color' in 'field list'
Error Number  : 1054
Request Date  : Sunday, July 24th 2011 @ 08:20:08 PM
Error Date    : Sunday, July 24th 2011 @ 08:20:08 PM
Script        : http://www.zupek.com/forums/online.php
Referrer      : http://www.zupek.com/forums/forum.php
IP Address    : 67.1.6.241
Username      : marcus1lane
Classname     : vB_Database
MySQL Version : 5.1.52

And then I went to my admins page but this displayed

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@zupek.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Apache/2.2.19 (Unix) mod_ssl/2.2.19 OpenSSL/0.9.8r DAV/2 mod_fcgid/2.3.6 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.zupek.com Port 80

So I am very lost everything else seems to work fine but this. I just recently install point market system and I thought that was the problem so I removed it other than the plugin in the admin section. Any help would be great!

What I have just recently installed
point market system
antispam or something similar to that
vbexperience
downloadsII

Regards
Marcus