pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24755-09_Hunting_the_Slipper.ps) >>/Users/jc/w/tmp/Tune-24755-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1813/Button_Whitaker/09_Hunting_the_Slipper.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-24755-09_Hunting_the_Slipper.abc 1398 ABC music file with the extracted tune(s)
Tune-24755-09_Hunting_the_Slipper.ps 36763 PostScript
Tune-24755-09_Hunting_the_Slipper.txt 1398 Plain-text file with the extracted tune(s)
Tune-24755-get.log 4875 Log file, useful mostly for debugging
These files should be available for 24 hours.