WebResource.axd throwing exceptions in web farm

Question

We have an array of about 12 servers serving a website. Over the past few hours, one single server has started throwing exceptions for WebResource.axd and ScriptResource.axd

Answer 1

The "?d=yj6PW1hbOvqhMkOh2gYGlw2&t=634207187366247462" is a link somehow (hash or something?) to a resource in the system.web.dll, so understandably with different dll's on that server the link isn't valid.