I've been getting this popup every day for the past few days...

There is no application set to open the URL rstf3://

enter image description here

I cannot figure out what is generating it, nor what an rstf3 URL might even be.
Google came up blank, Console shows no reference to it at all; I had hoped it might at least give a clue as to what app was trying to request it.

iGetter is the only new app on here which could possibly fit the timeline; I'll try quitting it tonight & see if the message no longer appears, but I'd really like to know what it is & what app type might be used to handle it if it's a legit request.

Running OS X 10.11.5 on a Mac Pro 5,1 with both ethernet & Wifi connectivity, if relevant.

  • 1
    What happens if you try and open it with a text editor? Does it show anything useful? – JMY1000 Jun 6 '16 at 6:45
  • I hadn't thought of that - I'll have to wait until next time I get the popup, as I dismissed this morning's after I asked this question :/ – Tetsujin Jun 6 '16 at 6:48
  • Does it happen regularly, at specific intervals? – perhapsmaybeharry Jun 6 '16 at 9:29
  • It happens overnight, every night for the past few days. The only app I have set to run overnight specifically is MacScan 3, but I've had that several months with no issue. The machine never sleeps, so I have no 'wake schedule ' I could check. – Tetsujin Jun 6 '16 at 9:38
  • You might be able to track it down with "lsof" to see what process is accessing the dialogue API. – Kent Jun 6 '16 at 10:55

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