Getting a lot of errors on site...can someone point me in the right direction?  for example when an admin tries to change the permissions on an article:

ModuleId: 61566
ModuleDefId: 255
FriendlyName:
ModuleControlSource: DesktopModules/RL_Articles/ArticlePermissions.ascx
AssemblyVersion: 04.05.03
PortalID: 596
PortalName: Disciples Now
UserID: 6118

ActiveTabID: 19344
ActiveTabName: Celebrate
RawURL: /Home/Celebrate/tabid/19344/ctl/ArticlePermissions/mid/61566/article/00000000-0000-0000-0000-000000000000/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://disciplesnow.faithstreams.com/Home/Celebrate/tabid/19344/ctl/Article/mid/61566/channel/00000000-0000-0000-0000-000000000000/article/4896/Default.aspx
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 96c5bef6-6f56-4646-80b2-0cbc31157b02
InnerException: Unable to cast object of type 'ASP.desktopmodules_rl_articles_articlepermissions_ascx' to type 'DotNetNuke.Entities.Modules.PortalModuleBase'.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.UI.Skins.Skin.InjectModule
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Unable to cast object of type 'ASP.desktopmodules_rl_articles_articlepermissions_ascx' to type 'DotNetNuke.Entities.Modules.PortalModuleBase'. ---> System.InvalidCastException: Unable to cast object of type 'ASP.desktopmodules_rl_articles_articlepermissions_ascx' to type 'DotNetNuke.Entities.Modules.PortalModuleBase'. at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings) --- End of inner exception stack trace ---

Thanks

--Dtre
 

Looking at your original post again I'm not sure my initial suggestion is it.

Has something changed recently on the RL_Articles module? 

Does that ASCX file it mentions inherit from PortalModuleBase?