CD Ripper - [length] fields ripping as 'blanks' (ie no data) in the output file name

[IOW1970]

MY PROBLEM (Ripping and Converting)
When attempting to include a track’s duration in the output filename / directory string all available fields appear to be empty or “blank” (i.e. [length]; [length_mmss]; [length_hhmmss]).

This problem exists with each CD I have tried...