pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-22491-GreenGrovesOfErinReel.ps) >>/Users/jc/w/tmp/Tune-22491-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ryan-cole/Tunes/GreenGrovesOfErinReel.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-22491-Button_Whitaker_12ElegantNewDances_1810.abc 177 ABC music file with the extracted tune(s)
Tune-22491-Button_Whitaker_12ElegantNewDances_1810.ps 6 PostScript
Tune-22491-Button_Whitaker_12ElegantNewDances_1810.txt 177 Plain-text file with the extracted tune(s)
Tune-22491-GreenGrovesOfErinReel.abc 495 ABC music file with the extracted tune(s)
Tune-22491-GreenGrovesOfErinReel.ps 35674 PostScript
Tune-22491-GreenGrovesOfErinReel.txt 495 Plain-text file with the extracted tune(s)
Tune-22491-get.log 13546 Log file, useful mostly for debugging
These files should be available for 24 hours.