Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1783/CaledonianCountryDances.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9595-CaledonianCountryDances.ps) >>/Users/jc/w/tmp/Tune-9595-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1783/CaledonianCountryDances.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_95958.log 164917 Log file, useful mostly for debugging
Tune-9595-CaledonianCountryDances.abc 160 ABC music file with the extracted tune(s)
Tune-9595-CaledonianCountryDances.ps 6 PostScript
Tune-9595-CaledonianCountryDances.txt 160 Plain-text file with the extracted tune(s)
Tune-9595-get.log 4341 Log file, useful mostly for debugging
Tune-95952-SkillernChalloner_PCD2.abc 158 ABC music file with the extracted tune(s)
Tune-95952-SkillernChalloner_PCD2.txt 158 Plain-text file with the extracted tune(s)
Tune-95952-get.log 3392 Log file, useful mostly for debugging
Tune-95957-ViolaRuth_AdvancedSD.abc 158 ABC music file with the extracted tune(s)
Tune-95957-ViolaRuth_AdvancedSD.ps 6 PostScript
Tune-95957-ViolaRuth_AdvancedSD.txt 158 Plain-text file with the extracted tune(s)
Tune-95957-get.log 4326 Log file, useful mostly for debugging
Tune-95958-get.log 4009 Log file, useful mostly for debugging
These files should be available for 24 hours.