pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73813-1340_.ps) >>/Users/jc/w/tmp/Tune-73813-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/1340_.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_73813.log 983 Log file, useful mostly for debugging
Tune-73813-1340_.abc 52 ABC music file with the extracted tune(s)
Tune-73813-1340_.ps 6 PostScript
Tune-73813-1340_.txt 52 Plain-text file with the extracted tune(s)
Tune-73813-get.log 3857 Log file, useful mostly for debugging
These files should be available for 24 hours.