pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7419-Chanters_Tune-G-16-4.ps) >>/Users/jc/w/tmp/Tune-7419-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/air/Chanters_Tune-G-16-4.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-7419-Chanters_Tune-G-16-4.abc 554 ABC music file with the extracted tune(s)
Tune-7419-Chanters_Tune-G-16-4.ps 36857 PostScript
Tune-7419-Chanters_Tune-G-16-4.txt 554 Plain-text file with the extracted tune(s)
Tune-7419-get.log 4716 Log file, useful mostly for debugging
Tune-74195-Young_Lady-G-16-2.abc 494 ABC music file with the extracted tune(s)
Tune-74195-Young_Lady-G-16-2.pdf 16097 Portable Data Format
Tune-74195-Young_Lady-G-16-2.ps 35180 PostScript
Tune-74195-Young_Lady-G-16-2.txt 494 Plain-text file with the extracted tune(s)
Tune-74195-get.log 5509 Log file, useful mostly for debugging
Tune-74197-get.log 4907 Log file, useful mostly for debugging
Tune-74199-get.log 5911 Log file, useful mostly for debugging
These files should be available for 24 hours.