pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-82967-1313_Athole_House.ps) >>/Users/jc/w/tmp/Tune-82967-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/1313_Athole_House.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_82967.log 284321 Log file, useful mostly for debugging
Tune-82967-1313_Athole_House.abc 846 ABC music file with the extracted tune(s)
Tune-82967-1313_Athole_House.ps 38494 PostScript
Tune-82967-1313_Athole_House.txt 846 Plain-text file with the extracted tune(s)
Tune-82967-get.log 4573 Log file, useful mostly for debugging
These files should be available for 24 hours.