One of our users received the following unexpected error yesterday whilst using our Silverlight app:
[Async_ExceptionOccurred]
Arguments:
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem.
Any idea how I start to investigate this? The problem is intermittent and has so far occurred twice. We are not using a clientaccesspolicy.xml file as the services and web app are on the same server. I have looked at the IIS logs for the time the user received the error but cannot see any obvious problems.
Where should I go from here? I can hardly ask the user to install Fiddler as the problem is very infrequent.
Putting a trace listener on the service will give you a very detailed explanation. Also, if the clients clock is significantly different then the services clock you can get an exception. You can fix that by adding a MaxClockSkew on the service.