Strange unhandled exception from asp.net application - Validation of viewstate MAC failed

Question

I don\'t know if anyone has seen this issue before but I\'m just stumped. Here\'s the unhandled exception message that my error page is capturing.

Er

Answer 1

For anyone else ending up struggling with this issue here is a helpful link to some work arounds:

http://blogs.msdn.com/tom/archive/2008/03/14/validation-of-viewstate-mac-failed-error.aspx