No editor you mean just a one pixel box where the editor is yep thats a plugin. I couldnt tell you how to make the hack work only the hack author could do that. I can tell you how to make your editor come up in reviewpost though.
Go through your plugins and only disable those hacks that you know definately deal with the editor like smilie hacks etc that way your not disabling everything. Once that is done you could have an editor in reviewpost. You can then go through and turn them on one at a time till you find the hack causing this. You can then keep that one off and contact the hack author and he could probally tell you how to disable his hack for just reviewpost.