The trainer is no longer attaching to the game files
Please use the update notification system to report a game patch, update or to report that the trainer may not be working with the latest version of the game. If 3 or more reports have been filed, consider BOOSTING the priority of this title for a faster turnaround on the updated trainer.
The "Event Timers" don't explain precisely what they do, and it seems there's no cheat for Richmond's Investigations in Suikoden II.
The Suikoden 2 event timer is for the Clive's quest, not for Richmond. There is a cheat (script) out there for the Richmond investigations but you will use CE.