Hi! Thanks for your feedback. The intermittend update is most likely caused by limitations built in the mod. The number of different ghost types and the number of chests being searched is throttled, to prevent numerous search queries being executed each tick. The GUI only updates the ghost and storage counts after a full search cycle has been completed. You can change the number of searches per tick in the mod settings.
The error is probably caused by fringe to locate the ghost from memory after it has been built, let me implement a validity check on beforehand which should solve that issue.
Do you perhaps have a copy of the save file for me, so I can investigate?