pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-32419-174_Round_the_Ferry.ps) >>/Users/jc/w/tmp/Tune-32419-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/174_Round_the_Ferry.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_32419.log 611192 Log file, useful mostly for debugging
Tune-32419-174_Round_the_Ferry.abc 671 ABC music file with the extracted tune(s)
Tune-32419-174_Round_the_Ferry.ps 32465 PostScript
Tune-32419-174_Round_the_Ferry.txt 671 Plain-text file with the extracted tune(s)
Tune-32419-get.log 18038 Log file, useful mostly for debugging
These files should be available for 24 hours.