...on late October update.
Except that while I could get into Files Pro straight from the desktop without a problem, every time I moved something to it from DropBox (which automatically launches FP), it froze on a grey screen - after which I couldnt access it at all.
Had to delete app three times while trying to figure out what was going on (lost files on first occurrence) without progress, BUT, for whatever reason the fourth reinstall seems to be working fine. Happy that it seems to have healed itself, as I use this app all the time.
But hey, whats life without a little mystery?
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3 hours later and broken again.
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Within a couple of days, a fix is posted. (Faster than many major software companies.) Thanks guys.