pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75118-121_Rosalind.ps) >>/Users/jc/w/tmp/Tune-75118-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/121_Rosalind.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-75118-121_Rosalind.abc 900 ABC music file with the extracted tune(s)
Tune-75118-121_Rosalind.ps 34024 PostScript
Tune-75118-121_Rosalind.txt 900 Plain-text file with the extracted tune(s)
Tune-75118-get.log 9976 Log file, useful mostly for debugging
These files should be available for 24 hours.