Hi Mike I don’t know if the solution is the same, but I have the same problem in the preview I can see the fieldset box but when i published there is no box (this happens with any field set, not only with the plugin), if the solution is the same can you please tell me where can i find reset.css. Thanks Miguel.
I don’t know if it helps but the link to the page with the form is this
*sorry for my english.