pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-13248-Humors_of_Donnybrook.ps) >>/Users/jc/w/tmp/Tune-13248-get.log 2>&1" returned status 256
http://tunearch.org/wiki/Humors_of_Donnybrook

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-13248-Humors_of_Donnybrook.abc 1448 ABC music file with the extracted tune(s)
Tune-13248-Humors_of_Donnybrook.ps 46380 PostScript
Tune-13248-Humors_of_Donnybrook.txt 1448 Plain-text file with the extracted tune(s)
Tune-13248-get.log 9424 Log file, useful mostly for debugging
These files should be available for 24 hours.