pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57233-213_Round_At_Summer_Morn.ps) >>/Users/jc/w/tmp/Tune-57233-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EverydaySongBook/213_Round_At_Summer_Morn.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-57233-213_Round_At_Summer_Morn.abc 808 ABC music file with the extracted tune(s)
Tune-57233-213_Round_At_Summer_Morn.ps 35098 PostScript
Tune-57233-213_Round_At_Summer_Morn.txt 808 Plain-text file with the extracted tune(s)
Tune-57233-get.log 4828 Log file, useful mostly for debugging
These files should be available for 24 hours.