pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-932-1331_BRAINARDS_WALTZ.ps) >>/Users/jc/w/tmp/Tune-932-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/BostonCollection/1331_BRAINARDS_WALTZ.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_93242.log 144175 Log file, useful mostly for debugging
Form_93208.log 805 Log file, useful mostly for debugging
Form_93216.log 812 Log file, useful mostly for debugging
Form_93224.log 805 Log file, useful mostly for debugging
Form_9323.log 813 Log file, useful mostly for debugging
Form_93236.log 801 Log file, useful mostly for debugging
Form_93255.log 806 Log file, useful mostly for debugging
Form_93261.log 965 Log file, useful mostly for debugging
Form_93269.log 798 Log file, useful mostly for debugging
Form_93277.log 805 Log file, useful mostly for debugging
Form_93286.log 832 Log file, useful mostly for debugging
Form_93294.log 814 Log file, useful mostly for debugging
Tune-932-1331_BRAINARDS_WALTZ.abc 911 ABC music file with the extracted tune(s)
Tune-932-1331_BRAINARDS_WALTZ.ps 37537 PostScript
Tune-932-1331_BRAINARDS_WALTZ.txt 911 Plain-text file with the extracted tune(s)
Tune-932-get.log 4728 Log file, useful mostly for debugging
Tune-93230-get.log 1414 Log file, useful mostly for debugging
These files should be available for 24 hours.