I am running DNN 4.8.3 with Events moduel on a calendar page set to calendar view. I have events module on home page linked to subcalendar which is set to list view only. When I first view the site the event list module shows an error in the module. If I goto calendar page then back to main page the event list shows properly. I am new new DNN. Have I linked the calendars incorrectly or is this a bug. The following is the error displayed in event viewer.

ModuleId: 433
ModuleDefId: 106
FriendlyName: Upcoming Events
ModuleControlSource: DesktopModules/Events/Events.ascx
AssemblyVersion: 04.08.03
PortalID: 2
PortalName:
UserID: 1
UserName:
ActiveTabID: 54
ActiveTabName: Home
RawURL: /Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://.........com/Home/tabid/54/ctl/Login/Default.aspx?returnurl=%2fDefault.aspx
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 1cb1f244-255e-4e46-b498-7e06889d7a81
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Modules.Events.SelectCategory.get_SelectedCategory
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Modules.Events.SelectCategory.get_SelectedCategory() at DotNetNuke.Modules.Events.EventList.BindDataGrid() at DotNetNuke.Modules.Events.EventList.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---
Source:
Server Name: MAIL