These are orphaned entries that may occur for various applications. Normally, when the performance monitor reads all counters for the first time, the extension's Open procedure is called. It typically reads what range of object indexes it supports from the registry. These index values are stored in the First Counter, First Help, Last Counter, and Last Help registry values under the application's performance key. If this Open procedure fails to read the data, the event id 1008 is recorded in the event log. These orphaned entries can be removed by modifying the following registry key at the remote server:
Delete the value "Open". Restart your computer for this change to take effect.