StLogger Community service failed to initialize as a result of damaged stlog.nsf database.
See in the \trace\sametime log file:
E StLogger [date], [time] Failed to initialize log library
Search for the following error in the Domino console.log file:
AMgr: Agent ('processStatistics' in 'stlog.nsf') error message: Object variable not set
Corrupt stlog.nsf database.
Resolving the problem
Replace stlog.nsf with a new, empty database created with the stlog.ntf template.