pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-28547-74thHighlandersQS.ps) >>/Users/jc/w/tmp/Tune-28547-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/74thHighlandersQS.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-28547-74thHighlandersQS.abc 479 ABC music file with the extracted tune(s)
Tune-28547-74thHighlandersQS.ps 34856 PostScript
Tune-28547-74thHighlandersQS.txt 479 Plain-text file with the extracted tune(s)
Tune-28547-get.log 4686 Log file, useful mostly for debugging
These files should be available for 24 hours.