pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-23663-Kazazok.ps) >>/Users/jc/w/tmp/Tune-23663-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Finland/Kazazok.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_23663.log 746575 Log file, useful mostly for debugging
Tune-23663-Kazazok.abc 406 ABC music file with the extracted tune(s)
Tune-23663-Kazazok.ps 33290 PostScript
Tune-23663-Kazazok.txt 406 Plain-text file with the extracted tune(s)
Tune-23663-get.log 5805 Log file, useful mostly for debugging
These files should be available for 24 hours.