pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-56339-Pop_Goes_The_Weasel.ps) >>/Users/jc/w/tmp/Tune-56339-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/sbigraf.tamu.edu/Pop_Goes_The_Weasel.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-56339-Pop_Goes_The_Weasel.abc 444 ABC music file with the extracted tune(s)
Tune-56339-Pop_Goes_The_Weasel.ps 33506 PostScript
Tune-56339-Pop_Goes_The_Weasel.txt 444 Plain-text file with the extracted tune(s)
Tune-56339-get.log 4803 Log file, useful mostly for debugging
These files should be available for 24 hours.