I'm running on DNN4.9.5 and when I try to get the RSS feed I get the following nasty Server Error:

Server Error in '/' Application.

---

Object reference not set to an instance of an object.

[NullReferenceException: Object reference not set to an instance of an object.]
   DotNetNuke.Modules.Events.EventRSS.Page_Load(Object sender, EventArgs e) +5420
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627

In the Event Viewer I see:

AssemblyVersion: 04.09.05
PortalID: 0
PortalName: Systems Documentation, Inc.
UserID: -1
UserName:
ActiveTabID: 61
ActiveTabName: Events
RawURL: /DesktopModules/Events/EventRSS.aspx?mid=372&tabid=61
AbsoluteURL: /DesktopModules/Events/EventRSS.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 65a8d3d8-145d-4581-8933-a0e7b668785d
InnerException: Unhandled Error:
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Modules.Events.EventRSS.Page_Load
StackTrace:
Message: System.Exception: Unhandled Error: ---> System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Modules.Events.EventRSS.Page_Load(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace --- at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.desktopmodules_events_eventrss_aspx.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) --- End of inner exception stack trace ---
Source:
Server Name: SDI-CNPROD

Sorry, should have said Owner there, not Creator.

I'm pretty sure this is fixed in 5.0.3, but the Events module seems to have disappeared from Gemini !! Looking at Ernst Peter's release notes for RC3 it shows this as being fixed - http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/20/threadid/344212/scope/posts/Default.aspx

Cheers
Roger