Does this happen on all types of documents ? try creating a test one that only has a rte property, does it also happen then?

I tried this. The same problem occurs...

Double check file permissions , if they are all ok, try replacing the /umbraco and /umbraco_client dir with a fresh 4.5.2

Ok, checked the file permissions. They seemed to be ok. Replaced /umbraco and /umbraco_client, but the tinymce still won't show.

Nope,

just replaced the /umbraco and /umbraco_client dir with a freshly downloaded 4.5.2 :(

Be sure to delete the client dependency stuff, /app_data/temp/ClientDependency

Are you running the backend on a specific port (other then 80 ?) or in an other directory then /umbraco ?

I'm running the backend on port 80 and directory /umbraco. I also deleted the client depedency files in the temp folder of ClientDependency.

Still no luck...:(

And when you inspect the page with firebug (or another tool) do you see any missing files (scripts) ?

None of the script files are missing. Using Firebug, I only get the error:

Do you see a request to the

/umbraco/plugins/tinymce3/tinymce3tinymceCompress.aspx?rnd=eafebeb1-6daf-438a-80fe-afc2c67821b1&module=gzipmodule&themes=umbraco&plugins=contextmenu,umbracomacro,noneditable,inlinepopups,table,advlink,media,paste,spellchecker,umbracoimg,umbracocss&languages=en

file ? What does that return (does it look like the tinymce js)?

Try requesting

http://[YOURSITE]/umbraco/plugins/tinymce3/tinymce3tinymceCompress.aspx?rnd=eafebeb1-6daf-438a-80fe-afc2c67821b1&module=gzipmodule&themes=umbraco&plugins=contextmenu,umbracomacro,noneditable,inlinepopups,table,advlink,media,paste,spellchecker,umbracoimg,umbracocss&languages=en

directly

Does that start with

var tinyMCEPreInit = 

When I request this, it returns an error:

"Fout 330 (net::ERR_CONTENT_DECODING_FAILED): Onbekende fout"

Ok then that seems to be the cause, probable something you need to correct/setup on the server

there's no url rewiting in play that could cause problems?

Url rewriting is not used. When I switch to a different domain name on IIS, the following link:

http://[YOURSITE]/umbraco/plugins/tinymce3/tinymce3tinymceCompress.aspx?rnd=eafebeb1-6daf-438a-80fe-afc2c67821b1&module=gzipmodule&themes=umbraco&plugins=contextmenu,umbracomacro,noneditable,inlinepopups,table,advlink,media,paste,spellchecker,umbracoimg,umbracocss&languages=en

works, and returns:

var tinyMCEPreInit = 

, but the richtexteditors are still not visible.

An important remark is to remove the files in ClientDependency after changing the flag in viewstateMoverModule (in Umbracosettings.config) to false. Then restart IIS and the richtexteditors will work again!

I didn't even know that module existed.. Nice catch :-)

I guess its enabled by default ?

No it's not enabled by default :-)

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