pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72157-Whistle_Oer_the_Lave_Ot_2.ps) >>/Users/jc/w/tmp/Tune-72157-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/wh/Whistle_Oer_the_Lave_Ot_2.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-72157-Whistle_Oer_the_Lave_Ot_2.abc 357 ABC music file with the extracted tune(s)
Tune-72157-Whistle_Oer_the_Lave_Ot_2.ps 36250 PostScript
Tune-72157-Whistle_Oer_the_Lave_Ot_2.txt 357 Plain-text file with the extracted tune(s)
Tune-72157-get.log 4723 Log file, useful mostly for debugging
These files should be available for 24 hours.