In IE7 and IE6 Toolbar wasn't displaying correctly and not breaking to the next line when there was no remaining space left for it. All working now, this is fixed.
In IE7 and IE6 - The toolbar shader (the parts that disable the toolbar when not in designview weren't getting positioned properly over their respective toolbars and as such no disabling was taking place. All working now, this is fixed.
In IE(all versions), when setting a relative url that included some special characters such as a question mark '?' IE was automatically transforming it into an aboslute url. This is a follow up fix from the previous version. All working now and your intended urls remain untouched by IE.
When hosting multiple versions of the editor on the same page, the HttpPostedFile instance returned by the "ImageUploaded" event handler was turning up with no file, or worse with the wrong file. This bug has been fixed now.
This is a minor revision release. Next release within 2 weeks (new features coming).