pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76596-ShanDinnaortheSillyOldMan.ps) >>/Users/jc/w/tmp/Tune-76596-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/OFPC/T/ShanDinnaortheSillyOldMan.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_76596.log 282069 Log file, useful mostly for debugging
Tune-76596-ShanDinnaortheSillyOldMan.abc 0 ABC music file with the extracted tune(s)
Tune-76596-ShanDinnaortheSillyOldMan.ps 0 PostScript
Tune-76596-get.log 20466 Log file, useful mostly for debugging
These files should be available for 24 hours.