HTML Emails in Universal Email

I am using CSS Formbuilder and Universal Email to create some contact forms. I have it working perfectly with plain text emails. I finally started working on using HTML emails and got it to work correctly 1 time. Usually though when I am in Universal email when I go into the body tab and create the form on the temporary page that comes up, when I save it, the temporary form saves and closes out right away (I only hit save, not exit). At that point the initial dialog box ( to set up the Universal email) comes up again. The time it worked it did not close out the temporary page, only saved it. When I closed it everything was fine and it worked correctly and the email was in HTML format.
I am using CS4.
I searched the forums but just didnt find anything similar.

Thanks.
Gary.

Adding this later...
I am getting a message that pops up some of the times when I click to save the temp file, it is: "Please select a server model for this site. WA Universal Email supports ASP, CFML and PHP. "
The site is defined and works fine on everything else.

When you edit the body of the message with Dreamweaver it should open up your new page and allow you to add in whatever you would like. When you save it the page should go away and the Universal Email interface should open back up with the page previewed.

To test this out a little further please try the following. On a new site that is properly defined create a new page and save it, then apply UE to the page and craft the custom form for the body of the message. Please post back and let us know what your result is on this, if it works ok here then it may be an issue with the site you are working in, or a problem with the Universal Email instance you have on the page.