Error when posting new thread or replying

[Edisonian]

Hello: I am having problems with vbulleting, and I am hoping that someone can provide guidance.

When I try to reply to a post I get this message:

"There seems to have been a slight problem with the Talk Theory database.
Please try again by pressing the refresh button in your browser.

An E-Mail has been dispatched to our Technical Staff, who you can also contact if the problem persists.

We apologise for any inconvenience."

The email that is sent says:

Database error in vBulletin 3.0.3:

"Invalid SQL:
SELECT vote, threadrateid
FROM threadrate
WHERE userid =
AND threadid = 87

mysql error: 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 'AND threadid = 87' at line 4

mysql error number: 1064

Date: Sunday 24th of October 2004 09:31:58 AM
Script: http://www.talktheory.com/forums/newreply.php
Referer: http://www.talktheory.com/forums/new...oquote=1&p=259
IP Address: 68.50.94.141"

When I try to post, I get this:

"The following errors occurred when this message was submitted:
You did not specify a username for your post. Please press your back button and enter one."

Thanks