Bekomme immer wieder diese Meldung bei der Anmeldung!!

[RowNotInTableException: Cannot perform this operation on a row not in the table.]
at System.Data.DataTable.SetOldRecord(DataRow row, Int32 proposedRecord)
at System.Data.DataTable.CommitRow(DataRow row)
at System.Data.DataRow.AcceptChanges()
at larne.db.TDataRow.AcceptChanges() in d:\source\proximo\dev1\projects\shared\larne\db.cs :line 3714
at larne.db.TDBUpdater.DoInsert(TDataRow Row) in d:\source\proximo\dev1\projects\shared\larne\db.cs :line 2300
at larne.db.TDBUpdater.UpdateInternal(TDataRow Row) in d:\source\proximo\dev1\projects\shared\larne\db.cs :line 2222
at larne.db.TDBUpdater.Update(TDataRow Row) in d:\source\proximo\dev1\projects\shared\larne\db.cs :line 2196
at larne.db.TDataRow.Update() in d:\source\proximo\dev1\projects\shared\larne\db.cs :line 3943
at stne.TAccount.Update() in d:\source\proximo\dev1\projects\stne\game\Core\Acc ount.cs:line 41
at stne.wf_Game.Page_Load(Object sender, EventArgs e) in d:\source\proximo\dev1\projects\stne\game\Game.asp x.cs:line 209
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Assembly: System.Data.dll
Time: 20.06.2015 13:46:19
Server: DE1
User-ID: 69145
STNE-Version: 1.0.74.894
Compiled at: 31.05.2015 19:10:49
Compiled from: Proximo