pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-15147-grand_old_man.ps) >>/Users/jc/w/tmp/Tune-15147-get.log 2>&1" returned status 256
http://www.piper-frank.de/tunebook/trad/abc/grand_old_man.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-15147-get.log 4935 Log file, useful mostly for debugging
Tune-15147-grand_old_man.abc 1468 ABC music file with the extracted tune(s)
Tune-15147-grand_old_man.ps 35353 PostScript
Tune-15147-grand_old_man.txt 1468 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.