By the way, one thing I want to point out that confused me originally
(and may confuse others) in this process is within the Data Source
Chooser. In order to Use Relative Times such as "Most recent file" you
must not highlight on an individual file or else polling will not work.
Instead you should just choose "Most recent file" or "Most recent #
files" and then click Add Source. Makes sense. But what confused me
was that when Data Source Chooser pops up and I'm within a directory,
the "Add Source" button remains grey-shaded and I can't click it. I
have to change my option within "Use Relative Times" once or twice and
then the "Add Source" button will finally turn black and then you can
click it.
Since "Add Source" wasn't turning black originally (and therefore
clickable) when I went into a data directory, I was thinking I had to
select a file even though I wanted the most recent file. And thus,
polling would not work for me.
