pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3894-Christening_952-A-32-4.ps) >>/Users/jc/w/tmp/Tune-3894-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ONeills/jig/Christening_952-A-32-4.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_38942.log 273091 Log file, useful mostly for debugging
Coll_38949.log 539157 Log file, useful mostly for debugging
Tune-3894-Christening_952-A-32-4.abc 433 ABC music file with the extracted tune(s)
Tune-3894-Christening_952-A-32-4.ps 34409 PostScript
Tune-3894-Christening_952-A-32-4.txt 433 Plain-text file with the extracted tune(s)
Tune-3894-get.log 4742 Log file, useful mostly for debugging
Tune-38948-get.log 1400 Log file, useful mostly for debugging
These files should be available for 24 hours.