pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-47960-2313_Miss_Louisa_Johnstons_Fancy.ps) >>/Users/jc/w/tmp/Tune-47960-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/2313_Miss_Louisa_Johnstons_Fancy.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-47960-2313_Miss_Louisa_Johnstons_Fancy.abc 970 ABC music file with the extracted tune(s)
Tune-47960-2313_Miss_Louisa_Johnstons_Fancy.ps 38400 PostScript
Tune-47960-2313_Miss_Louisa_Johnstons_Fancy.txt 970 Plain-text file with the extracted tune(s)
Tune-47960-get.log 4957 Log file, useful mostly for debugging
These files should be available for 24 hours.