pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57475-AuntMarysJ.ps) >>/Users/jc/w/tmp/Tune-57475-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/jig/AuntMarysJ.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-57475-AuntMarysJ.abc 375 ABC music file with the extracted tune(s)
Tune-57475-AuntMarysJ.ps 35422 PostScript
Tune-57475-AuntMarysJ.txt 375 Plain-text file with the extracted tune(s)
Tune-57475-get.log 4264 Log file, useful mostly for debugging
These files should be available for 24 hours.