pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8962-08_SEVEN_STEP_POLKA.ps) >>/Users/jc/w/tmp/Tune-8962-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HaandMeDoonDaFiddle/08_SEVEN_STEP_POLKA.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_89625.log 602900 Log file, useful mostly for debugging
Coll_89627.log 275010 Log file, useful mostly for debugging
Form_8962.log 820 Log file, useful mostly for debugging
Tune-8962-08_SEVEN_STEP_POLKA.abc 735 ABC music file with the extracted tune(s)
Tune-8962-08_SEVEN_STEP_POLKA.ps 33351 PostScript
Tune-8962-08_SEVEN_STEP_POLKA.txt 735 Plain-text file with the extracted tune(s)
Tune-8962-get.log 4739 Log file, useful mostly for debugging
Tune-89620-get.log 9948 Log file, useful mostly for debugging
Tune-89621-get.log 4577 Log file, useful mostly for debugging
Tune-89622-get.log 6943 Log file, useful mostly for debugging
Tune-89623-get.log 3924 Log file, useful mostly for debugging
Tune-89624-get.log 10866 Log file, useful mostly for debugging
Tune-89625-get.log 9236 Log file, useful mostly for debugging
Tune-89626-get.log 181861 Log file, useful mostly for debugging
Tune-89627-get.log 10839 Log file, useful mostly for debugging
Tune-89628-get.log 14113 Log file, useful mostly for debugging
Tune-89629-get.log 183584 Log file, useful mostly for debugging
These files should be available for 24 hours.