pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3754-x10.ps) >>/Users/jc/w/tmp/Tune-3754-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/x10.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_37548.log 306810 Log file, useful mostly for debugging
Tune-3754-get.log 3763 Log file, useful mostly for debugging
Tune-3754-x10.abc 178 ABC music file with the extracted tune(s)
Tune-3754-x10.ps 32242 PostScript
Tune-3754-x10.txt 178 Plain-text file with the extracted tune(s)
Tune-37542-get.log 19318 Log file, useful mostly for debugging
Tune-37548-get.log 4998 Log file, useful mostly for debugging
Tune-37549-get.log 4605 Log file, useful mostly for debugging
These files should be available for 24 hours.