I've been experiencing an error while editing Web Service connections in the Metastorm Administrative Tools. Here is the message that I received:
Webpage error details
Message: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500
I also noticed that there was a Warning from ASP.NET 4.0 in the Windows Application Log:
Event code: 3003
Event message: A validation error has occurred.
After a little research I ran across a few ASP.NET articles that pointed me in the right direction.
I added the attribute: requestValidationMode="2.0" to the element in the MetastormAdministration Application's Web.config so that my httpRuntime tag looked like this:
This allows the MetastormAdministration App to use .NET 2.0 Validation instead of .NET 4.0. From what I have read the validateRequest="false" attribute inside of the pages element should prevent validation, however, I was unable to change any Web Service Connections through the admin tools without the requestValidationMode attribute.