Re: Text Editor has gone.
- slow internet connection?
- same issues with Tiki11 (or Tiki9) in your same server?
- did you check that your server meet the server requirements to run Tiki12? See Requirements and Tiki12, just in case
- did you try disabling the wysiwyg in Tiki12? If you get lost with all params, run the Admin Wizard
- did you visit de server check to see any meaninful tip?
- did you have a look at the apache server logs, if you can access them? (maybe some error there can give you some hint)