Received the following error after 'successful' upgrade to 5.0.1. Error was received on the Host -> Host Settings menu.

ModuleId: 327
ModuleDefId: 72
FriendlyName: Host Settings
ModuleControlSource: DesktopModules/Admin/HostSettings/HostSettings.ascx
AssemblyVersion: 5.0.1
PortalID: 0
PortalName: Southport Congregational Church
UserID: 1
UserName: host
ActiveTabID: 16
ActiveTabName: Host Settings
RawURL: /dnnrarify/tabid/16/portalid/0/Default.aspx
AbsoluteURL: /dnnrarify/Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.21022; .NET CLR 3.5.30729; .NET CLR 3.0.30618; InfoPath.2)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 7005dc18-73c8-4dcf-ba89-03a7657c704a
InnerException: An item with the same key has already been added.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.ThrowHelper.ThrowArgumentException
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: An item with the same key has already been added. ---> System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value) at DotNetNuke.Entities.Modules.ModuleControlController.GetModuleControlsByModuleDefinitionID(Int32 moduleDefID) at DotNetNuke.Entities.Modules.ModuleControlController.GetModuleControls(Int32 moduleDefID) at DotNetNuke.Modules.Admin.Host.HostSettings.BindData() at DotNetNuke.Modules.Admin.Host.HostSettings.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---
Source:
Server Name: RARIFY-001

Has anyone encountered this error? Thanks in advanced for any assistance.