pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54113-162_MrSamuelMacknightsFavourite.ps) >>/Users/jc/w/tmp/Tune-54113-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Pringle/162_MrSamuelMacknightsFavourite.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-54113-162_MrSamuelMacknightsFavourite.abc 939 ABC music file with the extracted tune(s)
Tune-54113-162_MrSamuelMacknightsFavourite.ps 41043 PostScript
Tune-54113-162_MrSamuelMacknightsFavourite.txt 939 Plain-text file with the extracted tune(s)
Tune-54113-CSGBT_1794-V2.abc 152 ABC music file with the extracted tune(s)
Tune-54113-CSGBT_1794-V2.ps 6 PostScript
Tune-54113-CSGBT_1794-V2.txt 152 Plain-text file with the extracted tune(s)
Tune-54113-get.log 10447 Log file, useful mostly for debugging
These files should be available for 24 hours.