pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-91441-ParsonsFarewell.ps) >>/Users/jc/w/tmp/Tune-91441-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/ParsonsFarewell.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-91441-113_MissVardysReel.abc 861 ABC music file with the extracted tune(s)
Tune-91441-113_MissVardysReel.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-91441-113_MissVardysReel.ps 38097 PostScript
Tune-91441-113_MissVardysReel.txt 861 Plain-text file with the extracted tune(s)
Tune-91441-ParsonsFarewell.abc 355 ABC music file with the extracted tune(s)
Tune-91441-ParsonsFarewell.ps 33415 PostScript
Tune-91441-ParsonsFarewell.txt 355 Plain-text file with the extracted tune(s)
Tune-91441-get.log 10038 Log file, useful mostly for debugging
These files should be available for 24 hours.