What version of PHP you got? Do you know?

I am on a Linux Server with Apache v1.3.34 (cgi) and PHP 4.4.2

Really weird, can you try with the version attached to this post? (product-pst_reynaldovb_test.xml )
All I did on this one was move the function to the beginning, before the call, although your PHP version is not supposed to be affected by things like that.

I didn't receive an error but it only correct shouting in the title bar, it did nothing for the message text.

1.- You got to disable vBulletin built-in antishouting feature.
2.- Your whole message have to be in caps, otherwise the filter wont be triggered.
3.- If testing with 'jumpy' text, make sure you are using at least 10 words.

I just installed this and turned off the vb default setting and i posted this message:

And let me guess... it didnt work. Thats not a shout, THIS IS A SHOUT!

Also 'jumpy' text is defined as capitalizing the first letter of every word. For a reason I dont understand, some people enjoy writing like that.

In my opinion, if you have people writing like this: "JUst teStIng the ShouTing ModIFICatIon to make SURE PEOPLE caNt sHOuT likE thIS", you need more than a simple mod to correct it. Or just modify the mod to always convert text to lowercase.

If you installed it and intend to keep it, please click the INSTALL button. :)

installed this hack, tested, and works like a charm

Amazing product.

Yeah, you need a more complex mod.