pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5598-imagination.ps) >>/Users/jc/w/tmp/Tune-5598-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/jazz/imagination.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_55981.log 287610 Log file, useful mostly for debugging
Coll_55986.log 455611 Log file, useful mostly for debugging
Tune-5598-get.log 6363 Log file, useful mostly for debugging
Tune-5598-imagination.abc 1880 ABC music file with the extracted tune(s)
Tune-5598-imagination.ps 46705 PostScript
Tune-5598-imagination.txt 1880 Plain-text file with the extracted tune(s)
Tune-55980-get.log 2859 Log file, useful mostly for debugging
Tune-55982-get.log 180239 Log file, useful mostly for debugging
Tune-55985-get.log 174601 Log file, useful mostly for debugging
Tune-55989-get.log 5429 Log file, useful mostly for debugging
These files should be available for 24 hours.