Photo Mechanic indicated "Ingest Complete" but only half the images on the card were downloaded. Unfortunately, formatted the card before catching this problem but used card-recovery software to recover images. After recovery, Photo Mechanic read the files as advertised. Particulars as follows:
File type: RAW & JPG
Card: CF,
Lexar Professional 800x, 32GB, UDMA 7
Camera: Canon EOS 1DX
Computer OS: Mac OS Sierra, 10.12.3
Would love to forward an operating log of some sort to understand problem. Hopefully it was operator error as I've lost a lot of confidence in a program I formerly considered "rock solid".