I'm getting the following error back from a central error handling routine in the global.asax:
Exception Message: Invalid length for a Base-64 char array.
Exception Source: mscorlib
Exception StackTrace: at System.Convert.FromBase64String(String s)
at System.Web.UI.LosFormatter.Deserialize(String input)
Exception TargetSite: Byte FromBase64String(System.String)
I've seen other postings for this exception, but none have been helpful. It seems to be related to viewstate, but in this case, the stack trace doesn't event tell me the source page, so I don't know where to begin troubleshooting this.