Moved site to new domain, HTML Editor instances no longer loading in CMS

I'm in the process of building a new site based on an existing database and have moved the whole thing over to a new domain on the same dedicated server. Everything's fine, apart from none of the HTML Editor instances in PowerCMS or DataAssist pages are loading - they flash briefly when the page loads and then disappear completely. Could you possibly take a look for me? I've attached a screengrab of the Console errors I'm getting but can give you FTP access in a PM. It's pretty urgent as I'm up against an impending deadline to have the site completed!

If you give me FTP access and a url to reproduce then I can take a look. It looks like your jquery file may have been corrupted in the transfer. You may just need to re-upload it. Usually when there are a bunch of errors, like this, the first one is causing the rest.

Hi Ray, yes I did try reuploading everything a couple of times and it fixed some issues but not all, just seems to be the HTML Editor that's the problem. FTP details in PM

I can't seem to get passed the challenge response security. Please send me that username and password so I can take a look.

Is it the FTP access or CMS login you can't get into?

Browsing the site. I get a challenge popup asking for a username and password before the page will even load.

Sorry, forgot I'd password protected the whole thing because it's draft! Details in PM.

I re-uploaded the webassist/ckeditor folder and that seems to have fixed it.

Now why didn't that work for me?! Many thanks!

I found corrupted characters in your files. For some reason the file transfer or something wasn't working properly. I updated your files to a more recent version of the CKEditor while I was in there as well.