Hi,
I've got a freetextbox control v3.16 on a page that simply edits website content. The textbox works perfectly in IE, however in firefox the follow exception occurs...
"Server Error in '/Beta08' Application.
Invalid postback or callback argument. Event validation is enabled using in configuration or in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. "
Has anyone encountered this and how did you resolve it?
By the way, my client only uses firefox so this is a must fix issue.