How to integrate CKEditor with ajax quick reply

Hello, My name is Jordan.
I've recently installed CKEditor 3.4b, to my "mybb" system.
Everything works well except of the ajax quick reply.
When I post a new thread (without ajax) it works well,
But when I try to post a new quick reply, I press "Post Reply" and there's a JS message that says:

The message is missing. Please enter a message.

So I'm wondering if there's anyone who knows how to fix it...
Here is the test forum with a test user.

Url: http://www.eli.divine-f.net/forumbb
Username: test
Password: 123456

Go into this thread and try to post a new quick reply:
http://www.eli.divine-f.net/forumbb/sho ... php?tid=17

Thanks in advance, if anyone knows how to fix it I'd appreciate it.
Have a nice day...

B.T.W. - I'm very desperate.. I don't think anyone can help me.. but It's worth the effort.