When Logging into an HP iMFP Terminal we see the error "Sequence contains no elements..." as in the attached screen shot 'image002.jpg'.

Blog Post created by toleary on Aug 8, 2013
The Copy Line Configuration for the Device has not been configured is most likely the root cause.
Open the Pharos Administrator and navigate to the Devices context, Output Management > Devices. Select the Device in question, and expand the "Copier" section below. Configure the "Copy Line Configuration" with needed copy lines. Typically these start at 0 and increment upwards, see attached screen shot 'CopyLines-v2'.