PEAR HTML_QuickForm <form> tag problem

I hope that someone will be able to help me get to the bottom of this problem, as it's starting to take an excessive amount of my time in trying to fix (and I could have written the form manually by now ....) I have been creating a number of admin screens which use QuickForm to request the data. All this has been working fine on my local development machine, the problem has been since I uploaded them to my web hosting provider. Although the forms are still displayed correctly, they do not respond to the submit button. On closer examination, the source as seen by the web browser has an illegal <form> tag. Instead of a tag containing the action, method, name and id for the form, the browser receives <formArray>. I have been unable to recreate this on my development machine. I've checked for other threads with this problem and found one that suggested that HTML_Common and HTML_QuickForm be re-installed (in that order) to get around an installer issue. I requested this of my provider, which they did, but the problem still remains. Has anyone else had this problem and know how to correct it? Thanks, -- Mike Fields