If you're having issues with the TinyMCE rich text editor in Umbraco, which is used by default for the richtext data type, then a simple update may resolve your problems. I was prompted to look into this due to an odd bug where users of Safari on Mac couldn't paste pictures using the "Paste from Word" dialog.
In order to update TinyMCE for Umbraco, follow these steps:
- Download the latest version from http://tinymce.moxiecode.com.
- Decompress the file and navigate to the tinymce folder.
- Copy all of the files to your Umbraco installation under the folder umbraco_client > tinymce3 and overwrite any existing files.
- Your TinyMCE is now updated to the latest version.