NullReferenceException

Just installed the trial, trying to get it working as a virtual folder under an existing application (SharePoint) and recieving this error. Virtual folder session state and trust levels have been adjusted to handle conflicts with the parent web.config.


[NullReferenceException: Object reference not set to an instance of an object.]
   GleamTech.FileVista.AuthenticationManager.Authenticate(HttpContext context) +30
   GleamTech.FileVista.FileVistaGlobalAsax.Application_AcquireRequestState(Object sender, EventArgs e) +731
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

 

Please see Server setup error.