I have done this in the past I am pretty sure, but a very quick look just now makes me wonder if I have resolved all the multiple fixes in currently active projects to single fixes. Sorry, not much help. Bruce -----Original Message----- From: Therion <therion-bounces@speleo.sk> On Behalf Of Tarquin Wilton-Jones via Therion Sent: Monday, 21 September 2020 10:37 To: Therion <therion@speleo.sk> Cc: Tarquin Wilton-Jones <tarquin.wilton-jones@ntlworld.com> Subject: [Therion] 2 fixes for a point with standard deviation Therion really doesn't seem to like using Survex for fixed points :( When you have exactly 2 fixes for a station, Therion 5.5.1 (with Survex 1.2.42) gives up when processing survey data, and gives no reason why. https://github.com/therion/therion/issues/270 There is a workaround; specify every fix twice. The result will be the same, but it will actually work. I get the feeling I am "holding it wrong". Surely this must have been a problem for someone in the past. Bruce, how come this has not broken your surveys? _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion