pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-59749-21172_SOUTH_SHORE.ps) >>/Users/jc/w/tmp/Tune-59749-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21172_SOUTH_SHORE.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_59749.log 978 Log file, useful mostly for debugging
Tune-59749-21172_SOUTH_SHORE.abc 723 ABC music file with the extracted tune(s)
Tune-59749-21172_SOUTH_SHORE.ps 39799 PostScript
Tune-59749-21172_SOUTH_SHORE.txt 723 Plain-text file with the extracted tune(s)
Tune-59749-get.log 4778 Log file, useful mostly for debugging
These files should be available for 24 hours.