pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-36820-v4.ps) >>/Users/jc/w/tmp/Tune-36820-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/IgnatiusSancho/CNS/v4.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-36820-get.log 5054 Log file, useful mostly for debugging
Tune-36820-v4.abc 543 ABC music file with the extracted tune(s)
Tune-36820-v4.ps 30886 PostScript
Tune-36820-v4.txt 543 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.