I wasnt able to reproduce the problem on adding the form to the page.
but was able to reproduce on editing the form.
I noticed a couple links that had the href set to use a pound sign for example:
<a href="#"><img src="images/TS_social_04_em.png" alt="email" name="email" width="48" height="65" id="email" onMouseOver="MM_swapImage('email','','plugins/images/TS_social_04_em_over.png',1)" onMouseOut="MM_swapImgRestore()" /></a>
i removed the pound from the links and the editing worked, the pound sign seams top be the cause of the problem