I just installed ComPreVal. Hopefully it should do the same pseudo-XHTML* checking and forced preview as what I had before, and hopefully without the backslash problem I had before. Bug me if anything’s broken.
* Pseudo because it’s text/html. If this for some reason offends you you can think of it as (pseudo-X)HTML. As to why I’m publishing anything at all with a text/html MIME type and an XHTML (Transitional, ewww) doctype, it’s because that’s how the CMS came, and I don’t have the skills to fix it… yet.