pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-67193-___.ps) >>/Users/jc/w/tmp/Tune-67193-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Finland/PenttilanSillalla-EmG,DmF-32-4.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_67193.log 121367 Log file, useful mostly for debugging
Tune-67193-___.abc 972 ABC music file with the extracted tune(s)
Tune-67193-___.ps 39292 PostScript
Tune-67193-___.txt 972 Plain-text file with the extracted tune(s)
Tune-67193-get.log 6538 Log file, useful mostly for debugging
These files should be available for 24 hours.