My, I'm all questions today... When I try to process my survey to produce a PDF plan, metapost appears to not like something, but there's no error message, so I've no idea where to look. I've attached the log, I can send other stuff if that's helpful. This is therion 0.3.3 on Linux, with THUSESVX defined. Cheers, Olly therion 0.3.3 initialization file: /etc/therion.ini reading ... done configuration file: thconfig reading ... done reading source files ... done preprocessing database ... done processing survey data ... ####################### cavern log file ######################## 1> Survex 1.0.31 2> Copyright (C) 1990-2004 Olly Betts 3> Survey has no fixed points. Therefore I've fixed 1 at (0,0,0) 4> 5> Survey contains 275 survey stations, joined by 274 legs. 6> There are 0 loops. 7> Total length of survey legs = 1180.04m (1180.04m adjusted) 8> Total plan length of survey legs = 868.99m 9> Total vertical length of survey legs = 522.64m 10> Vertical range = 189.70m (from 21 at 2.59m to 185 at -187.11m) 11> North-South range = 139.82m (from 261 at 16.42m to 242 at -123.40m) 12> East-West range = 145.01m (from 196 at 34.11m to 231 at -110.90m) 13> 32 1-nodes. 14> 219 2-nodes. 15> 19 3-nodes. 16> 4 4-nodes. 17> 1 5-node. 18> ######################### transcription ######################## 3> 1 : 2@entrance.76 5> 275 : 15@boiling.76 -- 274 : 14@boiling.76 10> 21 : 1@bent.76 -- 185 : 11@keg.76 11> 261 : 1@boiling.76 -- 242 : 12@noways.76 12> 196 : 3@tap.76 -- 231 : 1@noways.76 13> 32 : 5@brave.76 14> 219 : 5@rift.76 15> 19 : 8@bent.76 16> 4 : 4@entrance.76 17> 1 : 2@entrance.76 #################### end of cavern log file #################### done calculating basic statistics ... done processing references ... done selecting export objects ... done scanning centreline tree ... done processing projection plan ... done average distortion: 2.77% writing 76_plan.pdf ... ####################### metapost log file ######################## Survex 1.0.31 Copyright (C) 1990-2004 Olly Betts Survey has no fixed points. Therefore I've fixed 1 at (0,0,0) Survey contains 275 survey stations, joined by 274 legs. There are 0 loops. Total length of survey legs = 1180.04m (1180.04m adjusted) Total plan length of survey legs = 868.99m Total vertical length of survey legs = 522.64m Vertical range = 189.70m (from 21 at 2.59m to 185 at -187.11m) North-South range = 139.82m (from 261 at 16.42m to 242 at -123.40m) East-West range = 145.01m (from 196 at 34.11m to 231 at -110.90m) 32 1-nodes. 219 2-nodes. 19 3-nodes. 4 4-nodes. 1 5-node. #################### end of metapost log file #################### therion: error -- metapost exit code -- 256