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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link="#467886" vlink="#96607D" style='word-wrap:break-word'><div class=WordSection1><p class=MsoPlainText>Thanks Thomas<o:p></o:p></p><p class=MsoPlainText>Unfortunately I don’t know how to install or run from a commit or pull request that does not seem to have an installer.<o:p></o:p></p><p class=MsoPlainText>I found my way here, but nothing there looks like a Therion install I can run.<o:p></o:p></p><p class=MsoPlainText><a href="https://github.com/therion/therion/actions/runs/24804177732">Fix crash with circular map reference · therion/therion@54c4a9a</a><o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>If you have any tips that would be great – I’ll be unavailable for about four days, so no immediate rush.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Thanks<o:p></o:p></p><p class=MsoPlainText>Bruce<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><span lang=EN-US style='mso-fareast-language:EN-NZ'>-----Original Message-----<br>From: Therion <therion-bounces@speleo.sk> On Behalf Of Thomas Holder<br>Sent: Thursday, 23 April 2026 10:21<br>To: List for Therion users <therion@speleo.sk><br>Subject: Re: [Therion] map survey option now causes (fatal) error</span></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Hi Bruce,<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Can you try the branch from this pull request?<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><a href="https://github.com/therion/therion/pull/746"><span style='color:windowtext;text-decoration:none'>https://github.com/therion/therion/pull/746</span></a><o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Best,<o:p></o:p></p><p class=MsoPlainText>Thomas<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>> On Apr 18, 2026, at 22:59, <a href="mailto:bruce@tomo.co.nz"><span style='color:windowtext;text-decoration:none'>bruce@tomo.co.nz</span></a> wrote:<o:p></o:p></p><p class=MsoPlainText>> <o:p></o:p></p><p class=MsoPlainText>> For a few maps in a few surveys I have been using the -survey option to constrain map statistics to match the underlying survey (page 34-35 of Therion Book).<o:p></o:p></p><p class=MsoPlainText>> I think some recent version of Therion has broken this.<o:p></o:p></p><p class=MsoPlainText>> The start of my map definition…<o:p></o:p></p><p class=MsoPlainText>> map MiddleEarthElev290Map \<o:p></o:p></p><p class=MsoPlainText>> -title "Middle Earth and<br>Lower Greenlink Caves<br>Elevation looking 290 deg" \<o:p></o:p></p><p class=MsoPlainText>> -projection [elevation 290 deg] \<o:p></o:p></p><p class=MsoPlainText>> -survey MiddleEarth # survey option forces map statistics to match <o:p></o:p></p><p class=MsoPlainText>> the survey The error reported… via Mapiah… C:\Program <o:p></o:p></p><p class=MsoPlainText>> Files\Therion\therion.exe: error -- Press ENTER to <o:p></o:p></p><p class=MsoPlainText>> exit!./GreenlinkArea/./middleearthcave/INDEXMiddleEarthElev290.th <o:p></o:p></p><p class=MsoPlainText>> [579] -- invalid survey reference – MiddleEarth via XTherion <o:p></o:p></p><p class=MsoPlainText>> C:\Program Files\Therion\therion.exe: error -- <o:p></o:p></p><p class=MsoPlainText>> ./GreenlinkArea/./middleearthcave/INDEXMiddleEarthElev290.th[579] -- invalid survey reference -- MiddleEarth writing xtherion file ... done I am using… therion 6.3.4+d9c313ac (2026-03-29)<o:p></o:p></p><p class=MsoPlainText>> - using Proj 9.8.0, compiled against 9.8.0 Anyone else noticed <o:p></o:p></p><p class=MsoPlainText>> this?<o:p></o:p></p><p class=MsoPlainText>> Thanks<o:p></o:p></p><p class=MsoPlainText>> Bruce<o:p></o:p></p><p class=MsoPlainText>> _______________________________________________<o:p></o:p></p><p class=MsoPlainText>> Therion mailing list<o:p></o:p></p><p class=MsoPlainText>> <a href="mailto:Therion@speleo.sk"><span style='color:windowtext;text-decoration:none'>Therion@speleo.sk</span></a><o:p></o:p></p><p class=MsoPlainText>> <a href="https://mailman.speleo.sk/listinfo/therion"><span style='color:windowtext;text-decoration:none'>https://mailman.speleo.sk/listinfo/therion</span></a><o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>_______________________________________________<o:p></o:p></p><p class=MsoPlainText>Therion mailing list<o:p></o:p></p><p class=MsoPlainText><a href="mailto:Therion@speleo.sk"><span style='color:windowtext;text-decoration:none'>Therion@speleo.sk</span></a><o:p></o:p></p><p class=MsoPlainText><a href="https://mailman.speleo.sk/listinfo/therion"><span style='color:windowtext;text-decoration:none'>https://mailman.speleo.sk/listinfo/therion</span></a><o:p></o:p></p></div></body></html>