I am also still getting the following exception:

Users Online works in the ALL or Alphabetical filtersbut not on the Online filter...

Please help!

AssemblyVersion: 04.05.03
PortalID: 2
PortalName: ****
UserID: 1
UserName: host
ActiveTabID: 60
ActiveTabName: User Accounts
RawURL: /****/Admin/UserAccounts/tabid/60/filter/Online/currentpage/1/Default.aspx
AbsoluteURL: /arbweb/Default.aspx
AbsoluteURLReferrer: http://www.****.com.au/****/Admin/UserAccounts/tabid/60/Default.aspx
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.7) Gecko/2009021910 Firefox/3.0.7 (.NET CLR 3.5.30729)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: baa88ca2-fc96-485c-8194-c1da6b8622a4
InnerException: FirstName
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Data.ProviderBase.FieldNameLookup.GetOrdinal
StackTrace:
Message: System.IndexOutOfRangeException: FirstName at System.Data.ProviderBase.FieldNameLookup.GetOrdinal(String fieldName) at System.Data.SqlClient.SqlDataReader.GetOrdinal(String name) at System.Data.SqlClient.SqlDataReader.get_Item(String name) at DotNetNuke.Security.Membership.AspNetMembershipProvider.FillUserInfo(Int32 portalId, IDataReader dr, Boolean isHydrated, Boolean CheckForOpenDataReader) at DotNetNuke.Security.Membership.AspNetMembershipProvider.FillUserCollection(Int32 portalId, IDataReader dr, Boolean ishydrated, Int32& totalRecords)
Source:
Server Name: WIN-A8M4B9I5U4W

Well my turn, at its 18 months on from when this thread was last used. I have Version 5.1.0 of UsersOnline. Got 2 error messages: 1) Sheduler wasnt on, ok now is and message as gone 2) Users Online is currently disabled in HostSettings. Let me highlight number 2), it wasnt disabled. So I disabled it and re-enabled it and not working. All the setting described in post previous to mine are exactly the same. As the problem come back?