pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-15982-037_Steam_Boat.ps) >>/Users/jc/w/tmp/Tune-15982-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JeanWhite/100_Popular_HRJCD/037_Steam_Boat.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-15982-037_Steam_Boat.abc 691 ABC music file with the extracted tune(s)
Tune-15982-037_Steam_Boat.ps 35279 PostScript
Tune-15982-037_Steam_Boat.txt 691 Plain-text file with the extracted tune(s)
Tune-15982-get.log 4653 Log file, useful mostly for debugging
These files should be available for 24 hours.