pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-26041-01_Toy.ps) >>/Users/jc/w/tmp/Tune-26041-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1813/Button_Whitaker/01_Toy.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-26041-01_Toy.abc 1193 ABC music file with the extracted tune(s)
Tune-26041-01_Toy.ps 37064 PostScript
Tune-26041-01_Toy.txt 1193 Plain-text file with the extracted tune(s)
Tune-26041-get.log 4422 Log file, useful mostly for debugging
These files should be available for 24 hours.