Thread: Error show when marking order as shipped

Server Error in '/' Application.
A potentially dangerous Request.Form value was detected from the client (FinalizationData="<root>
</root>").
Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. To allow pages to override application request validation settings, set the requestValidationMode attribute in the httpRuntime configuration section to requestValidationMode="2.0". Example: <httpRuntime requestValidationMode="2.0" />. After setting this value, you can then disable request validation by setting validateRequest="false" in the Page directive or in the <pages> configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case. For more information, see http://go.microsoft.com/fwlink/?LinkId=153133.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (FinalizationData="<root>
</root>").


P.S. I just migrated the website based on Version 8.0.1.2 to the new server windows server 2008 (IIS7.5).

Anyone have a solution to this issue?