pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3942-Skylark_2-G-16-2.ps) >>/Users/jc/w/tmp/Tune-3942-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ONeills/air/Skylark_2-G-16-2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_39420.log 856 Log file, useful mostly for debugging
Form_39421.log 799 Log file, useful mostly for debugging
Tune-3942-Skylark_2-G-16-2.abc 530 ABC music file with the extracted tune(s)
Tune-3942-Skylark_2-G-16-2.ps 33494 PostScript
Tune-3942-Skylark_2-G-16-2.txt 530 Plain-text file with the extracted tune(s)
Tune-3942-get.log 12547 Log file, useful mostly for debugging
Tune-39424-get.log 3877 Log file, useful mostly for debugging
Tune-39427-get.log 1539 Log file, useful mostly for debugging
Tune-39428-get.log 3070 Log file, useful mostly for debugging
Tune-39429-get.log 4274 Log file, useful mostly for debugging
These files should be available for 24 hours.