Just incorporating the output of topparser in my larger project and I find that there is no problem whatsoever with empty scraps. I suspect the crash (due to empty scraps?) is when ALL the scraps are empty. I tried tweaking the topparser output to produce a map that contains the centerline, and moved the map definitions outside of the survey definition like this. map 54-EnglishPlanCL -title "54-English centreline plan" \ -projection plan 54 #survey centreline only endmap map 54-EnglishPlan -title "54-English plan" \ -projection plan 54-EnglishPlan-s1 #empty initially 54-EnglishPlan-s2 #empty initially endmap .but always the same error if I try to compile only the single survey and produce a pdf. (If the above had worked then topparser could be modified to avoid the therion crashes). As soon as one of the scraps is not empty (has a drawing), then there is no problem producing a pdf. Another workaround could be to get topparser to insert a point station or two in each scrap. And yes, a therion warning that all the scraps are empty would better. Bruce PS: Why 54-English? This passage was dug through 3 rock pile blockages and surveyed in 2.5 hrs to produce a passage 36m long. We called it "Feeling English" _____ From: Bruce [mailto:bruce@tomo.co.nz] Sent: Sunday, 4 August 2013 11:27 p.m. To: 'List for Therion users' Subject: RE: [Therion] Topparser 123

PS maps do not work on initials run, as all the th2 file has is empty scale. Shame it causes a fatal error, it would be nice if it was just a warning that nothing could be produced, but in my default file I just have the map export commented out

Do you mean empty scraps? Hmm, pretty sure empty scraps are OK (there was a bug where 'debug on' caused a crash and it was fixed in 5.3.11?) Still, a memory is a dangerous thing after a long caving trip - I'll report back - but not soon. Bruce