Actaully this is the log during which the error first happened
"
<log LogTypeKey="SCHEDULER_EXCEPTION" LogGUID="33aaef9c-83de-4c55-8daf-9d2dc13fc25a" LogCreateDate="2004-06-25T16:19:04" LogCreateDateNum="20040625161904480" LogPortalID="-1" LogPortalName="" LogUserID="-1" LogFileID="8726e8d5-5d2b-4ddb-848e-91831a6b3f4e" LogUserName="">
<p n="ExceptionState">
</p>
<p n="Message">Thread was being aborted.</p>
<p n="InnerException">
</p>
<p n="TargetSite">Void Run(DotNetNuke.Scheduling.ScheduleHistoryItem)</p>
<p n="StackTrace"> at DotNetNuke.Scheduling.ProcessGroup.Run(ScheduleHistoryItem objScheduleHistoryItem)</p>
<p n="HelpLink">
</p>
<p n="Source">DotNetNuke.DNNScheduler</p>
</log>
<log LogTypeKey="SCHEDULER_EXCEPTION" LogGUID="1dcb93a1-8adb-4f9a-add0-a7188828f1a7" LogCreateDate="2004-06-26T09:25:07" LogCreateDateNum="20040626092507856" LogPortalID="-1" LogPortalName="" LogUserID="-1" LogFileID="8726e8d5-5d2b-4ddb-848e-91831a6b3f4e" LogUserName="">
<p n="ErrorCode">-2147467259</p>
<p n="Errors">System.Data.OleDb.OleDbErrorCollection</p>
<p n="Message">Could not update; currently locked.</p>
<p n="Source">Microsoft JET Database Engine</p>
<p n="InnerException">
</p>
<p n="TargetSite">Void ExecuteCommandTextErrorHandling(Int32)</p>
<p n="StackTrace"><![CDATA[ at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(Int32 hr)
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult)
at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult)
at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult)
at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method)
at System.Data.OleDb.OleDbCommand.ExecuteNonQuery()
at OleDB.ApplicationBlocks.Data.OleDBHelper.ExecuteNonQuery(OleDbConnection connection, CommandType commandType, String commandText, OleDbParameter[] commandParameters)
at OleDB.ApplicationBlocks.Data.OleDBHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, OleDbParameter[] commandParameters)
at DotNetNuke.DNNScheduler.AccessDataProvider.UpdateScheduleHistory(Int32 ScheduleHistoryID, DateTime EndDate, Boolean Succeeded, String LogNotes, DateTime NextStart)
at DotNetNuke.Scheduling.SchedulingController.UpdateScheduleHistory(ScheduleHistoryItem objScheduleHistoryItem)
at DotNetNuke.Scheduling.CoreScheduler.UpdateScheduleHistory(ScheduleHistoryItem objScheduleHistoryItem)]]></p>
<p n="HelpLink">
</p>
</log>
<log LogTypeKey="SCHEDULER_EXCEPTION" LogGUID="c4150e61-a85d-4155-a76e-222ede4207c2" LogCreateDate="2004-06-28T10:05:28" LogCreateDateNum="20040628100528694" LogPortalID="-1" LogPortalName="" LogUserID="-1" LogFileID="8726e8d5-5d2b-4ddb-848e-91831a6b3f4e" LogUserName="">
<p n="Message"><![CDATA[Argument 'Index' is not a valid value.]]></p>
<p n="ParamName">
</p>
<p n="InnerException">
</p>
<p n="TargetSite">System.Object get_Item(System.Object)</p>
<p n="StackTrace"><![CDATA[ at Microsoft.VisualBasic.Collection.get_Item(Object Index)
at DotNetNuke.Scheduling.CoreScheduler.RemoveFromScheduleQueue(ScheduleItem objScheduleItem)
at DotNetNuke.Scheduling.CoreScheduler.WorkStarted(SchedulerClient& objSchedulerClient)]]></p>
<p n="HelpLink">
</p>
<p n="Source">Microsoft.VisualBasic</p>
</log>
<log LogTypeKey="SCHEDULER_EXCEPTION" LogGUID="7d1f78a6-6d6e-49e6-8923-249e5e76d86f" LogCreateDate="2004-06-28T10:44:24" LogCreateDateNum="20040628104424247" LogPortalID="-1" LogPortalName="" LogUserID="-1" LogFileID="8726e8d5-5d2b-4ddb-848e-91831a6b3f4e" LogUserName="">
<p n="ErrorCode">-2147467259</p>
<p n="Errors">System.Data.OleDb.OleDbErrorCollection</p>
<p n="Message"><![CDATA[Could not find file 'C:\Inetpub\wwwroot\dotnetnuke\Providers\DataProviders\AccessDataProvider\DotNetNuke.mdb.resources'.]]></p>
<p n="Source">Microsoft JET Database Engine</p>
<p n="InnerException">
</p>
<p n="TargetSite">Void ProcessResults(Int32)</p>
<p n="StackTrace"> at System.Data.OleDb.OleDbConnection.ProcessResults(Int32 hr)
at System.Data.OleDb.OleDbConnection.InitializeProvider()
at System.Data.OleDb.OleDbConnection.Open()
at OleDB.ApplicationBlocks.Data.OleDBHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, OleDbParameter[] commandParameters)
at DotNetNuke.DNNScheduler.AccessDataProvider.UpdateScheduleHistory(Int32 ScheduleHistoryID, DateTime EndDate, Boolean Succeeded, String LogNotes, DateTime NextStart)
at DotNetNuke.Scheduling.SchedulingController.UpdateScheduleHistory(ScheduleHistoryItem objScheduleHistoryItem)
at DotNetNuke.Scheduling.CoreScheduler.UpdateScheduleHistory(ScheduleHistoryItem objScheduleHistoryItem)</p>
<p n="HelpLink">
</p>
</log>
<log LogTypeKey="SCHEDULER_EXCEPTION" LogGUID="a0b362c5-8307-48ae-8590-3d1c5267e127" LogCreateDate="2004-06-28T13:34:43" LogCreateDateNum="20040628133443759" LogPortalID="-1" LogPortalName="" LogUserID="-1" LogFileID="8726e8d5-5d2b-4ddb-848e-91831a6b3f4e" LogUserName="">
<p n="ExceptionState">
</p>
<p n="Message">Thread was being aborted.</p>
<p n="InnerException">
</p>
<p n="TargetSite">Int32 Initialize()</p>
<p n="StackTrace"> at System.Data.Common.IDBInitialize.Initialize()
at System.Data.OleDb.OleDbConnection.InitializeProvider()
at System.Data.OleDb.OleDbConnection.Open()
at OleDB.ApplicationBlocks.Data.OleDBHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, OleDbParameter[] commandParameters)
at DotNetNuke.DNNScheduler.AccessDataProvider.UpdateScheduleHistory(Int32 ScheduleHistoryID, DateTime EndDate, Boolean Succeeded, String LogNotes, DateTime NextStart)
at DotNetNuke.Scheduling.SchedulingController.UpdateScheduleHistory(ScheduleHistoryItem objScheduleHistoryItem)
at DotNetNuke.Scheduling.CoreScheduler.UpdateScheduleHistory(ScheduleHistoryItem objScheduleHistoryItem)</p>
<p n="HelpLink">
</p>
<p n="Source">System.Data</p>
</log>
"