main: fix usage of Communicator.Fail and Communicator.Error
main: fix usage of Communicator.Fail and Communicator.Error

You would think that because I wrote this package I would remember how
to use it... Fail for user errors, Error for errors out of the users
control!

paked/NUMBERSFORPICTURES,paked/NUMBERSFORPICTURES,paked/NUMBERSFORPICTURES