pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-14363-4173.ps) >>/Users/jc/w/tmp/Tune-14363-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/4173=Fingalls_Lamentations.abc2.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_14363.log 443010 Log file, useful mostly for debugging
Tune-14363-4173.abc 1095 ABC music file with the extracted tune(s)
Tune-14363-4173.ps 41406 PostScript
Tune-14363-4173.txt 1095 Plain-text file with the extracted tune(s)
Tune-14363-get.log 5227 Log file, useful mostly for debugging
These files should be available for 24 hours.