pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66192-08_la_Diligence.ps) >>/Users/jc/w/tmp/Tune-66192-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1770/Longman_Cotillons/08_la_Diligence.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-66192-08_la_Diligence.abc 1991 ABC music file with the extracted tune(s)
Tune-66192-08_la_Diligence.ps 45563 PostScript
Tune-66192-08_la_Diligence.txt 1991 Plain-text file with the extracted tune(s)
Tune-66192-get.log 8118 Log file, useful mostly for debugging
These files should be available for 24 hours.