I looked at what you pointed at, but it doesn’t seem to be relavent.. I have my blog and everything in the same directory, the main one. I don’t have wordpress install in a different directory… files in the /we-admin folder, including the templates.php are 666.
I am not sure what the editor is looking for, but whatever it is it has a 666 permission and the files I downlad, edit, and then re-upload are on the main directory.