pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73923-4339_The_Puff.ps) >>/Users/jc/w/tmp/Tune-73923-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ACMV/4339_The_Puff.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_73923.log 266066 Log file, useful mostly for debugging
Form_73923.log 2363 Log file, useful mostly for debugging
Tune-73923-4339_The_Puff.abc 764 ABC music file with the extracted tune(s)
Tune-73923-4339_The_Puff.ps 34249 PostScript
Tune-73923-4339_The_Puff.txt 764 Plain-text file with the extracted tune(s)
Tune-73923-get.log 4460 Log file, useful mostly for debugging
These files should be available for 24 hours.