pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4747-CJ23.ps) >>/Users/jc/w/tmp/Tune-4747-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Contra/CJ23.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_47475.log 399540 Log file, useful mostly for debugging
Coll_47477.log 452931 Log file, useful mostly for debugging
Coll_47478.log 124745 Log file, useful mostly for debugging
Form_47471.log 859 Log file, useful mostly for debugging
Form_47478.log 847 Log file, useful mostly for debugging
Tune-4747-CJ23.abc 1948 ABC music file with the extracted tune(s)
Tune-4747-CJ23.ps 49406 PostScript
Tune-4747-CJ23.txt 1948 Plain-text file with the extracted tune(s)
Tune-4747-get.log 4279 Log file, useful mostly for debugging
Tune-47470-get.log 10100 Log file, useful mostly for debugging
Tune-47472-get.log 6049 Log file, useful mostly for debugging
Tune-47478-get.log 3457 Log file, useful mostly for debugging
These files should be available for 24 hours.