The reasons why you get this error might be several. For example, you might have corrupted your web.config
file (like Joshua says) and thus break your paths to the default templates. In this situation you should override your web.config
file with the one from the EmptyProject
folder and correct the connection string if needed.
Other reason for getting this error might be because the structure of the ~/Sitefinity folder is corrupted. For example, you are missing some of the files or you have moved them somewhere else and so on. If so, you should override the whole Sitefinity folder with the one from EmptyProject
. If you have made any changes to any files be sure not to override them.
In case you have modified some of the files, you might have deleted some required controls from the template. For example, the error you sent shows that some of your templates are missing required control with the specified ID and type. Check if this might be the case as well.
the Telerik team