There seems to be a problem in the Benchmark function when the new "Last buy and sell price reset" option is used. The profit (or lack thereof) is not calculated correctly.
I have highlighted the problematic fields, as you can see they show earnings as 0.0 rather than than the value. I guess it happens only when that new function is triggered as there are other working values there.
http://i.imgur.com/sZRCeYZ.jpg