pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-49606-2016NEFFA_Italian.ps) >>/Users/jc/w/tmp/Tune-49606-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Italy/2016NEFFA_Italian.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_49606.log 577090 Log file, useful mostly for debugging
Tune-49606-2016NEFFA_Italian.abc 22796 ABC music file with the extracted tune(s)
Tune-49606-2016NEFFA_Italian.ps 194672 PostScript
Tune-49606-2016NEFFA_Italian.txt 22796 Plain-text file with the extracted tune(s)
Tune-49606-get.log 20958 Log file, useful mostly for debugging
These files should be available for 24 hours.