pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-79733-JacksonsBottleOfClaret133.ps) >>/Users/jc/w/tmp/Tune-79733-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/oneills/waifs/T/JacksonsBottleOfClaret133.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
Form_79733.log 836 Log file, useful mostly for debugging
Tune-79733-JacksonsBottleOfClaret133.abc 249 ABC music file with the extracted tune(s)
Tune-79733-JacksonsBottleOfClaret133.ps 34714 PostScript
Tune-79733-JacksonsBottleOfClaret133.txt 249 Plain-text file with the extracted tune(s)
Tune-79733-get.log 8870 Log file, useful mostly for debugging
These files should be available for 24 hours.