pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9437-IrishTrot.ps) >>/Users/jc/w/tmp/Tune-9437-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/IrishTrot.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-9437-30672_Young_Widow.abc 648 ABC music file with the extracted tune(s)
Tune-9437-30672_Young_Widow.txt 648 Plain-text file with the extracted tune(s)
Tune-9437-IrishTrot.abc 227 ABC music file with the extracted tune(s)
Tune-9437-IrishTrot.ps 32448 PostScript
Tune-9437-IrishTrot.txt 227 Plain-text file with the extracted tune(s)
Tune-9437-get.log 7843 Log file, useful mostly for debugging
Tune-94371-016_Irish_Girl-001.svg 27670 Scalable Vector Graphics format
Tune-94371-016_Irish_Girl.abc 855 ABC music file with the extracted tune(s)
Tune-94371-016_Irish_Girl.txt 855 Plain-text file with the extracted tune(s)
Tune-94371-get.log 4134 Log file, useful mostly for debugging
These files should be available for 24 hours.