pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-27237-21121_Thro_the_Wood_Laddie.ps) >>/Users/jc/w/tmp/Tune-27237-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ERM/21121_Thro_the_Wood_Laddie.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-27237-043_Humpty_Dumpty.abc 719 ABC music file with the extracted tune(s)
Tune-27237-043_Humpty_Dumpty.pdf 16901 Portable Data Format
Tune-27237-043_Humpty_Dumpty.ps 34178 PostScript
Tune-27237-043_Humpty_Dumpty.txt 719 Plain-text file with the extracted tune(s)
Tune-27237-21121_Thro_the_Wood_Laddie.abc 989 ABC music file with the extracted tune(s)
Tune-27237-21121_Thro_the_Wood_Laddie.ps 42643 PostScript
Tune-27237-21121_Thro_the_Wood_Laddie.txt 989 Plain-text file with the extracted tune(s)
Tune-27237-get.log 10359 Log file, useful mostly for debugging
These files should be available for 24 hours.