pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-64138-Merry_Dancers_.ps) >>/Users/jc/w/tmp/Tune-64138-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/www.purr.demon.co.uk/Merry_Dancers_.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-64138-Merry_Dancers_.abc 448 ABC music file with the extracted tune(s)
Tune-64138-Merry_Dancers_.ps 36939 PostScript
Tune-64138-Merry_Dancers_.txt 448 Plain-text file with the extracted tune(s)
Tune-64138-get.log 4926 Log file, useful mostly for debugging
These files should be available for 24 hours.