Hive.CompactHive() Illegal operation attempted on a registry key that has been marked for deletion

[Nick]

Current Date/Time: 12/15/2009 3:58:34 PM
Exec. Date/Time: 12/15/2009 3:02:34 PM
Build Date: 12/1/2009
OS: Microsoft Windows NT 6.0.6002 Service Pack 2
Language: en-US
System Uptime: 0 Days 1 Hours 30 Mins 3 Secs
Program Uptime: 00:04:41.3946038
PID: 5388
Executable: C:\Program Files\Little Registry Optimizer\Little Registry Optimizer.exe
Process Name: System.Diagnostics.Process (Little Registry Optimizer)
Main Module Name: Little Registry Optimizer.exe
Module Count: 56
Thread Count: 19
Thread ID: 16
Is Admin: True
Is Debugged: False
Version: 0.3
CLR Version: 2.0.50727.4200

Type #0 System.ComponentModel.Win32Exception
NativeErrorCode #0: 1018
ErrorCode #0: -2147467259
Message #0: Illegal operation attempted on a registry key that has been marked for deletion
TargetSite #0: Void CompactHive()
Source #0: Little Registry Optimizer

StackTrace:
  at Little_Registry_Optimizer.Hive.CompactHive()
  at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
  at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
  at System.Threading.ThreadHelper.ThreadStart()