I am implementing my own IContentTagEditor control. From reading your docs the two requirements for doing this is that the custom control have an id of tagsControl and it implement the IContentTagEditor interface. I have done this and sitefinity correctly passes the provider name and the contentId to my custom control. I am using this to load the tags in a RadComboBox which is located on my custom control template page. My tags load in the combo box fine. So, it seems like I have followed the two guidelines specified by your documentation. However, when I try to get the control by overriding SaveContent from my ContentItemEdit<T> page, , it gives me the following error,
A required control was not found in the template for "Medpac.module.document.Resources.ControlTemplates.Backend.MedpacDocEditView.ascx". The control must be assignable form type "Medpac.module.document.WebControls.Admin.DocumentType" and must have ID "tagsControl"
I am not sure why this would be the error since sitefinity passed my custom control the correct provider name and content id and I loaded the tags correctly when the custom control was intializing. Do you have any ideas? Any help would be appreciated.