pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4733-Gael.ps) >>/Users/jc/w/tmp/Tune-4733-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/Gael.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_47337.log 131196 Log file, useful mostly for debugging
Tune-4733-Gael.abc 1768 ABC music file with the extracted tune(s)
Tune-4733-Gael.ps 54024 PostScript
Tune-4733-Gael.txt 1768 Plain-text file with the extracted tune(s)
Tune-4733-get.log 5061 Log file, useful mostly for debugging
These files should be available for 24 hours.