pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9768-proto.ps) >>/Users/jc/w/tmp/Tune-9768-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Riddell/proto.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_97680.log 1006084 Log file, useful mostly for debugging
Tune-9768-get.log 4510 Log file, useful mostly for debugging
Tune-9768-proto.abc 313 ABC music file with the extracted tune(s)
Tune-9768-proto.ps 30508 PostScript
Tune-9768-proto.txt 313 Plain-text file with the extracted tune(s)
Tune-97683-get.log 1403 Log file, useful mostly for debugging
Tune-97689-get.log 1530 Log file, useful mostly for debugging
These files should be available for 24 hours.