pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5016-LiltingBansheeEtAl.ps) >>/Users/jc/w/tmp/Tune-5016-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/demo/Tunes/LiltingBansheeEtAl.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_5016.log 147647 Log file, useful mostly for debugging
Coll_50161.log 137967 Log file, useful mostly for debugging
Form_50161.log 845 Log file, useful mostly for debugging
Tune-5016-LiltingBansheeEtAl.abc 212 ABC music file with the extracted tune(s)
Tune-5016-LiltingBansheeEtAl.ps 35293 PostScript
Tune-5016-LiltingBansheeEtAl.txt 212 Plain-text file with the extracted tune(s)
Tune-5016-get.log 4393 Log file, useful mostly for debugging
Tune-50160-get.log 3163 Log file, useful mostly for debugging
Tune-50161-get.log 5997 Log file, useful mostly for debugging
Tune-50163-get.log 4918 Log file, useful mostly for debugging
These files should be available for 24 hours.