pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-14383-Long_Way_to_Tipperary-G-24-4.ps) >>/Users/jc/w/tmp/Tune-14383-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/song/Long_Way_to_Tipperary-G-24-4.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-14383-Long_Way_to_Tipperary-G-24-4.abc 638 ABC music file with the extracted tune(s)
Tune-14383-Long_Way_to_Tipperary-G-24-4.ps 37128 PostScript
Tune-14383-Long_Way_to_Tipperary-G-24-4.txt 638 Plain-text file with the extracted tune(s)
Tune-14383-get.log 4796 Log file, useful mostly for debugging
These files should be available for 24 hours.