Server Error in '/ICS' Application.

WebClient does not support concurrent I/O operations.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NotSupportedException: WebClient does not support concurrent I/O operations.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NotSupportedException: WebClient does not support concurrent I/O operations.]
   System.Net.WebClient.ClearWebClientState() +3607038
   System.Net.WebClient.DownloadString(Uri address) +196
   Jenzabar.ICS.Meetings.BigBlueButtonConnector.GetMeetingStatus(Meeting meeting) +245
   Jenzabar.ICS.Web.Portlets.MeetingPortlet.Views.MeetingViewBase.<UpdateCurrentSessions>b__2(Meeting meeting) +36
   System.Linq.WhereSelectListIterator`2.MoveNext() +245
   System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +165
   Jenzabar.ICS.Web.Portlets.MeetingPortlet.Views.MeetingViewBase.UpdateCurrentSessions() +584
   Jenzabar.ICS.Web.Portlets.MeetingPortlet.Views.DefaultView.OnLoad(EventArgs e) +20
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3178

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929