pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-10631-32352_LOCH_LEVEN_CASTLE_HORNPIPE.ps) >>/Users/jc/w/tmp/Tune-10631-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/32352_LOCH_LEVEN_CASTLE_HORNPIPE.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_10631.log 618724 Log file, useful mostly for debugging
Tune-10631-32352_LOCH_LEVEN_CASTLE_HORNPIPE.abc 727 ABC music file with the extracted tune(s)
Tune-10631-32352_LOCH_LEVEN_CASTLE_HORNPIPE.ps 39511 PostScript
Tune-10631-32352_LOCH_LEVEN_CASTLE_HORNPIPE.txt 727 Plain-text file with the extracted tune(s)
Tune-10631-get.log 5141 Log file, useful mostly for debugging
These files should be available for 24 hours.