pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-21712-N2K_sond.ps) >>/Users/jc/w/tmp/Tune-21712-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/scand/N2K_sond.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_21712.log 1320890 Log file, useful mostly for debugging
Tune-21712-N2K_sond.abc 1599 ABC music file with the extracted tune(s)
Tune-21712-N2K_sond.ps 45736 PostScript
Tune-21712-N2K_sond.txt 1599 Plain-text file with the extracted tune(s)
Tune-21712-get.log 7668 Log file, useful mostly for debugging
These files should be available for 24 hours.