FA-Q1
The error ‘The file you just attempted to open is already opened in EDIT mode. Will open this file in read-only mode’ appears when you try to open some specific things in the Backoffice.
FA-A1
Last time the file was used it didn’t close correctly.
What to do:
Backoffice
Setup / Utilities
Utilities
Object Unlock Utility
Enter the Object # or press ALL