pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4997-4151.ps) >>/Users/jc/w/tmp/Tune-4997-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/4151=Lady_Montgomerie-abc2.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_49973.log 1489821 Log file, useful mostly for debugging
Coll_49977.log 1238325 Log file, useful mostly for debugging
Tune-4997-4151.abc 1225 ABC music file with the extracted tune(s)
Tune-4997-4151.ps 41419 PostScript
Tune-4997-4151.txt 1225 Plain-text file with the extracted tune(s)
Tune-4997-get.log 29951 Log file, useful mostly for debugging
Tune-49979-get.log 4096 Log file, useful mostly for debugging
These files should be available for 24 hours.