Freenas: transmission-daemon error loading config file

Just had a problem with Freenas Bittorent deamon:

Error on the webpage: The changes could not be applied (error code 1).

Error in the logfile: transmission-daemon: transmission-daemon Error loading config file — exiting. (daemon.c:401)

Solution:

/usr/home/transmission/.config/transmission-daemon# rm settings.json

AND

Set the User Mask permissions to Default (0002)