pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-21733-humours_of_tullycrine_edor.ps) >>/Users/jc/w/tmp/Tune-21733-get.log 2>&1" returned status 256
http://www.piper-frank.de/tunebook/trad/abc/humours_of_tullycrine_edor.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-21733-get.log 0 Log file, useful mostly for debugging
Tune-21733-humours_of_tullycrine_edor.abc 0 ABC music file with the extracted tune(s)
Tune-21733-humours_of_tullycrine_edor.ps 0 PostScript
These files should be available for 24 hours.