pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5946-21672_MARGARET_MACDONALD.ps) >>/Users/jc/w/tmp/Tune-5946-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21672_MARGARET_MACDONALD.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_59463.log 515272 Log file, useful mostly for debugging
Coll_59467.log 287143 Log file, useful mostly for debugging
Coll_59468.log 749908 Log file, useful mostly for debugging
Form_59462.log 838 Log file, useful mostly for debugging
Form_59466.log 966 Log file, useful mostly for debugging
Form_59468.log 978 Log file, useful mostly for debugging
List59462.log 162 Log file, useful mostly for debugging
Tune-5946-21672_MARGARET_MACDONALD.abc 779 ABC music file with the extracted tune(s)
Tune-5946-21672_MARGARET_MACDONALD.ps 37730 PostScript
Tune-5946-21672_MARGARET_MACDONALD.txt 779 Plain-text file with the extracted tune(s)
Tune-5946-get.log 4805 Log file, useful mostly for debugging
Tune-59462-get.log 5009 Log file, useful mostly for debugging
These files should be available for 24 hours.