Event ID 4999 is logged when an administrator deletes a mailbox store on an Exchange Server 2007 Service Pack 1-based server

Log Name:      Application 
Source:        MSExchange Common 
Event ID:      4999 
Description: 
Watson report about to be sent to dw20.exe for process id: <ID>, with parameters: E12, c-RTL-AMD64, <version>, M.E.C.ReplayService,  M.E.C.Replay, M.E.C.R.ScrReplayConfiguration.ConfigurationPathConflict, System.IndexOutOfRangeException, 63b0, <version>.   ErrorReportingEnabled: True
 
more information from the crash
+  $exception {System.IndexOutOfRangeException: Index was outside the bounds of the array. 
   at Microsoft.Exchange.Cluster.Replay.ScrReplayConfiguration.ConfigurationPathConflict(Dictionary`2 currentConfigurations, String&  field) 
   at Microsoft.Exchange.Cluster.ReplayService.ReplayManager.AddScrTargetConfigurations(List`1 ScrTargetConfigurations, Dictionary`2  currentConfigurations, Int32 limit) 
   at Microsoft.Exchange.Cluster.ReplayService.ReplayManager.GetCurrentConfigurations(Boolean& targetReplicaInstanceWasNotStarted) 
   at Microsoft.Exchange.Cluster.ReplayService.ReplayManager.GetCurrentConfigurations(Boolean calledForShutdown, Boolean&  targetReplicaInstanceWasNotStarted) 
   at Microsoft.Exchange.Cluster.ReplayService.ReplayManager.ConfigurationUpdaterInternal(Boolean calledForShutdown, Boolean&  targetReplicaInstanceWasNotStarted) 
   at Microsoft.Exchange.Cluster.ReplayService.ReplayManager.ConfigurationUpdater(Object calledForShutdownObject) 
   at System.Threading._TimerCallback.TimerCallback_Context(Object state) 
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
   at System.Threading._TimerCallback.PerformTimerCallback(Object state)} System.Exception {System.IndexOutOfRangeException}