pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-96423-Speed_the_Plough-A-32-3.ps) >>/Users/jc/w/tmp/Tune-96423-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/reel/Speed_the_Plough-A-32-3.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_96423.log 0 Log file, useful mostly for debugging
Tune-96423-Speed_the_Plough-A-32-3.abc 714 ABC music file with the extracted tune(s)
Tune-96423-Speed_the_Plough-A-32-3.ps 35986 PostScript
Tune-96423-Speed_the_Plough-A-32-3.txt 714 Plain-text file with the extracted tune(s)
Tune-96423-get.log 4588 Log file, useful mostly for debugging
These files should be available for 24 hours.