pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7445-1181_Sailing-V1.ps) >>/Users/jc/w/tmp/Tune-7445-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/GoldenBookOfFavoriteSongs/1181_Sailing-V1.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-7445-1181_Sailing-V1.abc 2766 ABC music file with the extracted tune(s)
Tune-7445-1181_Sailing-V1.ps 49480 PostScript
Tune-7445-1181_Sailing-V1.txt 2766 Plain-text file with the extracted tune(s)
Tune-7445-get.log 4627 Log file, useful mostly for debugging
Tune-74450-get.log 1392 Log file, useful mostly for debugging
Tune-74454-get.log 1392 Log file, useful mostly for debugging
Tune-74458-get.log 4615 Log file, useful mostly for debugging
These files should be available for 24 hours.