Time Left N/A replied by Linux_Dan @ Sun, 01 Nov 2015 15:09:44 +0000

I MAYHAVEFOUND A FIX
I had re-installed JB today, and when I went to set “Prevent App Nap” I saw another (checked) toggle labelled “Open in 32 bit mode”.
I unchecked it and I now have a working Time Left column !!

WAHOO !