There have been reports of cases where scanning fails as a result of other
applications placing a lock on the MediaMonkey database.
This is known to occur with Acronis TruImage's Non-stop Backup feature.
To solve the problem, simply disable the Non-stop Backup from functioning
on the MediaMonkey database by moving the database to a location
that isn't monitored or
exclude C:\Users\\AppData\Local\MediaMonkey\ from the
Acronis watch list.