pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57543-Master.ps) >>/Users/jc/w/tmp/Tune-57543-get.log 2>&1" returned status 256
http://kiwifolk.com/dfc/abcweb/abcf/Master Melody Collection.abc

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-57543-Master.abc 529 ABC music file with the extracted tune(s)
Tune-57543-Master.ps 36933 PostScript
Tune-57543-Master.txt 529 Plain-text file with the extracted tune(s)
Tune-57543-get.log 33426 Log file, useful mostly for debugging
These files should be available for 24 hours.