pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3353-033_Contentment.ps) >>/Users/jc/w/tmp/Tune-3353-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/033_Contentment.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_3353.log 264661 Log file, useful mostly for debugging
Coll_33532.log 263256 Log file, useful mostly for debugging
Coll_33533.log 994376 Log file, useful mostly for debugging
Coll_33539.log 264661 Log file, useful mostly for debugging
Tune-3353-033_Contentment.abc 648 ABC music file with the extracted tune(s)
Tune-3353-033_Contentment.ps 32273 PostScript
Tune-3353-033_Contentment.txt 648 Plain-text file with the extracted tune(s)
Tune-3353-get.log 4602 Log file, useful mostly for debugging
Tune-33535-get.log 53575 Log file, useful mostly for debugging
These files should be available for 24 hours.