MyBB Community Forums

Hello, i am using MyBB 1.2.6 spanish version, and i am having a big problem.
When i am creating a new thread and its title has the word "HYIP", after i click on "POST THREAD" button, a 404 error page appears and then i can´t enter to the forum. I can´t go to the index.php page, it gives me an 404 error.
It is very strange, because when the title has other words it doesn't happen. I tried with a lot of words and letters. But the only word that give me the error is "HYIP".
However i only can enter to the ACP, and when i delete the forum where the thread is, the forum works.

Can somebody help me??

Can you try this http://community.mybboard.net/showthread.php?tid=7592 ?

Thanks for answering, but it didn´t solve the problem.
If you want, try to create a new thread with the title HYIP in my forum. The link is http://www.mdforum.com.ar/ , and view the error.

Tkey Wrote:Since we need to register i dont think people will try sorry

What i have to do to allow guest's post?

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can somebody help me??

Contact your host's customer support. It has something to do with your host blocking out HYIP in POST/GET requests. Also check out the link Tikitiki provided.