Hi there!

Could you please take a look at the Windows Event Log (Start->Control Panel->Administrative Tools->Event Viewer->Application) and check whether you have any error entries related to UltiDev Cassini, WebGuide4 or ASP.NET? If there are, please export your Application event log as an EVT file and contact us by email so we could give you an email address where you could send the event log so we could analyze it. If possible, please clean up the event log, then reproduce the problem, and then export the EVT file - it will then contain only relevant information. If you could, please also include screenshots of WG4 configuration. Even though we are not WG4 experts, its settings could give us some idea what may be causing the crash.

Best regards,
UltiDev Team.

Hi!

We would like to look at the log, because even though our hope is not high as for immediately finding the cause, it may help us find similarities with other "impossible" support cases we successfully resolved.

Did we understand you correctly that the problem occurs not only when PC is rebooted, but also when you start the service manually?

Best regards,
UltiDev Team.

Thank you. Please also include WG4 configuration information if possible.

Best regards,
UltiDev Team.

Hi, Torben.

UltiDev Cassini can indeed crash if it can't write to Windows Event Log (Application) for whatever reason. However, event log being full should not be one of the reasons, because starting with the Release Candidate 1, Cassini installer checks Event Log settings and not only makes Event Log larger than default, but most importantly, it makes Event Log capable of being overwritten, which should prevent the Event Log from ever being full. Please check settings of the Application Event Log and see whether it is set up to overwrite older events. If not, we'll try to establish whether settings on your Event Log were changed after Cassini installation, or Cassini installer failed to modify Event Log settings.

Please let us know whether you are running Vista or XP.

Best regards,
UltiDev Team.

Thank you for letting use know.

Could you please let us know what we need to do in order to reproduce the problem?

Best regards,
UltiDev Team.

Slava,

Could you please take a look at Windows Event Viewer where UltiDev Cassini logs its failures and exceptions? It's at Control Panel -> Administrative Tools -> Event Viewer -> Application. If you see error entries related to either UltiDev Cassini or .NET Framework, please post them here or contact us via email so we could provide you an email address where you could send us event log info for analysis.

If Cassini crashes while idling, please try this: bring up Cassini Explorer by going to http://localhost:7756/, click Edit next to your application entry and see whether "Always keep application in memory to improve first page response time" checkbox is checked. Having this box checked makes UltiDev Cassini periodically send request to the default page of your application, just to keep it loaded and cached. Sometimes crashing applications take Cassini with them, so we would like to suggest turning this checkbox off to see whether it will help.

Best regards,
UltiDev Team.

I've been running Cassini from console and reproduced this error!

Unhandled Exception: System.CannotUnloadAppDomainException: Error while unloading appdomain. (Exception from HRESULT: 0x80131015)
at System.AppDomain.Unload(AppDomain domain)
at System.Web.HttpRuntime.ReleaseResourcesAndUnloadAppDomain(Object state)
at System.Threading._ThreadPoolWaitCallback.WaitCallback_Context(Object state
)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, C
ontextCallback callback, Object state)
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)