pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-36039-021_Harvest_Home.ps) >>/Users/jc/w/tmp/Tune-36039-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JeanWhite/100_Popular_HRJCD/021_Harvest_Home.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_36039.log 1014 Log file, useful mostly for debugging
Tune-36039-021_Harvest_Home.abc 679 ABC music file with the extracted tune(s)
Tune-36039-021_Harvest_Home.ps 35357 PostScript
Tune-36039-021_Harvest_Home.txt 679 Plain-text file with the extracted tune(s)
Tune-36039-get.log 4699 Log file, useful mostly for debugging
These files should be available for 24 hours.