Thank you for sharing your issue.
I am reading through the thread and looking at your attachment and it seems that the problem is caused by the fact that you are using a custom template for the HtmlField control and the built in template for the HtmlField control has changed and you are missing a required control on the template. please dowload the latest version of the Sitefinity SDK and get the new template from the templates archive distributed with the SDK (found under SDK\Content\Resources folder).
the Telerik team
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