pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-50062-Tha_Crodhaigh_Mac_Allan.ps) >>/Users/jc/w/tmp/Tune-50062-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/RobertPetrie/Tha_Crodhaigh_Mac_Allan.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-50062-JohnFrench.abc 145 ABC music file with the extracted tune(s)
Tune-50062-JohnFrench.pdf 2217 Portable Data Format
Tune-50062-JohnFrench.ps 6 PostScript
Tune-50062-JohnFrench.txt 145 Plain-text file with the extracted tune(s)
Tune-50062-Tha_Crodhaigh_Mac_Allan.abc 570 ABC music file with the extracted tune(s)
Tune-50062-Tha_Crodhaigh_Mac_Allan.ps 34760 PostScript
Tune-50062-Tha_Crodhaigh_Mac_Allan.txt 570 Plain-text file with the extracted tune(s)
Tune-50062-get.log 10317 Log file, useful mostly for debugging
These files should be available for 24 hours.