pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3552-New_Lesson-D-16-4.ps) >>/Users/jc/w/tmp/Tune-3552-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/jig/New_Lesson-D-16-4.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_35520.log 1363011 Log file, useful mostly for debugging
Coll_35524.log 935961 Log file, useful mostly for debugging
Tune-3552-New_Lesson-D-16-4.abc 570 ABC music file with the extracted tune(s)
Tune-3552-New_Lesson-D-16-4.ps 36475 PostScript
Tune-3552-New_Lesson-D-16-4.txt 570 Plain-text file with the extracted tune(s)
Tune-3552-get.log 4617 Log file, useful mostly for debugging
Tune-35524-get.log 6642 Log file, useful mostly for debugging
Tune-35526-get.log 4719 Log file, useful mostly for debugging
Tune-35529-get.log 4349 Log file, useful mostly for debugging
These files should be available for 24 hours.