pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1977-f.ps) >>/Users/jc/w/tmp/Tune-1977-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/redhawk.org/zouki/f.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
Coll_19774.log 145227 Log file, useful mostly for debugging
Coll_19775.log 263664 Log file, useful mostly for debugging
Tune-1977-f.abc 444 ABC music file with the extracted tune(s)
Tune-1977-f.ps 36200 PostScript
Tune-1977-f.txt 444 Plain-text file with the extracted tune(s)
Tune-1977-get.log 68115 Log file, useful mostly for debugging
Tune-19773-get.log 1425 Log file, useful mostly for debugging
These files should be available for 24 hours.