pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-30552-tunes.ps) >>/Users/jc/w/tmp/Tune-30552-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1767/Thompson/tunes.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-30552-get.log 17452 Log file, useful mostly for debugging
Tune-30552-tunes.abc 21357 ABC music file with the extracted tune(s)
Tune-30552-tunes.ps 124744 PostScript
Tune-30552-tunes.txt 21357 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.