pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72937-2272_the_Haggies_o_Dunbar.ps) >>/Users/jc/w/tmp/Tune-72937-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2272_the_Haggies_o_Dunbar.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-72937-2272_the_Haggies_o_Dunbar.abc 1198 ABC music file with the extracted tune(s)
Tune-72937-2272_the_Haggies_o_Dunbar.ps 38179 PostScript
Tune-72937-2272_the_Haggies_o_Dunbar.txt 1198 Plain-text file with the extracted tune(s)
Tune-72937-get.log 4790 Log file, useful mostly for debugging
These files should be available for 24 hours.