pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-87534-lesson-five-humours-of-tulla-i-picked.ps) >>/Users/jc/w/tmp/Tune-87534-get.log 2>&1" returned status 256
http://itmbanjo.blogspot.com/2013/08/lesson-five-humours-of-tulla-i-picked.html

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-87534-get.log 4971 Log file, useful mostly for debugging
Tune-87534-lesson-five-humours-of-tulla-i-picked.abc 220 ABC music file with the extracted tune(s)
Tune-87534-lesson-five-humours-of-tulla-i-picked.ps 34241 PostScript
Tune-87534-lesson-five-humours-of-tulla-i-picked.txt 220 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.