pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2672-Kate.ps) >>/Users/jc/w/tmp/Tune-2672-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CCD/Kate.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_26727.log 264662 Log file, useful mostly for debugging
Coll_26729.log 391227 Log file, useful mostly for debugging
Form_26720.log 1940 Log file, useful mostly for debugging
Form_26727.log 866 Log file, useful mostly for debugging
Tune-2672-Kate.abc 1264 ABC music file with the extracted tune(s)
Tune-2672-Kate.ps 35807 PostScript
Tune-2672-Kate.txt 1264 Plain-text file with the extracted tune(s)
Tune-2672-get.log 4193 Log file, useful mostly for debugging
Tune-26726-get.log 5388 Log file, useful mostly for debugging
These files should be available for 24 hours.