pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8050-492_Sea_Flower.ps) >>/Users/jc/w/tmp/Tune-8050-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnTreat/GftF/492_Sea_Flower.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_80506.log 355985 Log file, useful mostly for debugging
Tune-8050-492_Sea_Flower.abc 576 ABC music file with the extracted tune(s)
Tune-8050-492_Sea_Flower.ps 33387 PostScript
Tune-8050-492_Sea_Flower.txt 576 Plain-text file with the extracted tune(s)
Tune-8050-get.log 4562 Log file, useful mostly for debugging
Tune-80500-get.log 48236 Log file, useful mostly for debugging
Tune-80501-get.log 1835 Log file, useful mostly for debugging
Tune-80507-get.log 4275 Log file, useful mostly for debugging
These files should be available for 24 hours.