Radeditor and Cannot Deserialize Dialog Parameters. Invalid character in a Base-64 string
I installed the radeditor and it occasionally threw the above error when trying various functions within the editor.
The solution can be found at http://www.telerik.com/help/aspnet-ajax/editorcannotdeserializedialogparameters.html
Essentially in the user.config put the folowing in:
<appSettings>
<add key="Telerik.Web.UI.DialogParametersEncryptionKey" value="2C23234234D4566DC4AD6A-63D6-4db9-A3FB-3adfasd6846D"/>
</appSettings>
Just an fyi.