pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8681-cranford_tunes1-100.ps) >>/Users/jc/w/tmp/Tune-8681-get.log 2>&1" returned status 256
http://www.cranfordpub.com/tunes/abcs/cranford_tunes1-100.txt

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-8681-cranford_tunes1-100.abc 574 ABC music file with the extracted tune(s)
Tune-8681-cranford_tunes1-100.ps 36194 PostScript
Tune-8681-cranford_tunes1-100.txt 574 Plain-text file with the extracted tune(s)
Tune-8681-get.log 21606 Log file, useful mostly for debugging
These files should be available for 24 hours.