I had the same problem as Jehremie, All the fixes failed, including backing up and clearing file, like Jehremine suggests. I hadn't included ddnWerk provider at the time. However after installing this editor and configuring it with just the defaults everything worked.

We just decided to switch to the Telerik editor in all of DNN installations and encountered the same problem on some portals.

While we could fix it on our development server by copying all the portal directories, then running Portal file syncronization then copying the files back and running syncronization again, it wasn't a satifactory fix for a production system.

Turns out that only the portals that had 'images' directory instead of 'Images' (with a capital i) were affected. For some reason the DNN file manager saw it as a lowercase i and the behavior appeared. We checked through FTP and the directory had a capital I. No matter how we tried, we couldn't get the File Manager in DNN to read it as a capital.

So we created an 'Images2' directory and copied all the files there. We then deleted the lowercase directory and renamed 'Images2' to 'Images'. Viola! the tree structure returned.

We didn't lose any links to images or espeically documents because of new File ID for the LinkClick function that was in the existing HTML for many modules.

Hope this helps others to quickly fix their installations so they can use the Telerik editor.

Bob

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