pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7006-PaulsWharfe.ps) >>/Users/jc/w/tmp/Tune-7006-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/PaulsWharfe.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_70063.log 457011 Log file, useful mostly for debugging
Coll_70064.log 471010 Log file, useful mostly for debugging
Tune-7006-PaulsWharfe.abc 217 ABC music file with the extracted tune(s)
Tune-7006-PaulsWharfe.ps 32922 PostScript
Tune-7006-PaulsWharfe.txt 217 Plain-text file with the extracted tune(s)
Tune-7006-get.log 4391 Log file, useful mostly for debugging
Tune-70060-get.log 1400 Log file, useful mostly for debugging
Tune-70061-get.log 4354 Log file, useful mostly for debugging
Tune-70062-get.log 4126 Log file, useful mostly for debugging
Tune-70063-get.log 5120 Log file, useful mostly for debugging
Tune-70064-get.log 4912 Log file, useful mostly for debugging
These files should be available for 24 hours.