I have two servers running Moodle 1.9.3: development and production. Both setups are the same, and the codebase is identical. The server environment is the same for each as well. However, the HTML editor does not show up on the development server even though it shows up on the production server. I'm going nuts trying to figure out what's different.
When I load up a page with an HTML editor (e.g., the "front page settings" page) on my development server, my error console gives me this error message:
CKEDITOR is not defined
HTMLArea is not defined
I've tried this with multiple browsers (Firefox, IE) across multiple platforms (Win, Mac, Linux), always with the same results: the editor shows up on the production server, but not on the development server. I've also double checked to make sure my files were not hacked, which I understand can cause this problem. The HTML editor is enabled on both servers, and in my user profile in both servers. I've even copied all the files from /lib/editor/ from the production server to the development server, just in case something went missing, but this did not help either.
So... What should I be looking for?