pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2304-William_Clarketunes.ps) >>/Users/jc/w/tmp/Tune-2304-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/maryhumphreys.co.uk/William_Clarketunes.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_23040.log 588512 Log file, useful mostly for debugging
Coll_23041.log 266779 Log file, useful mostly for debugging
Coll_23043.log 65264 Log file, useful mostly for debugging
Coll_23048.log 65264 Log file, useful mostly for debugging
Form_23041.log 1591 Log file, useful mostly for debugging
Form_23047.log 736 Log file, useful mostly for debugging
Tune-2304-William_Clarketunes.abc 262 ABC music file with the extracted tune(s)
Tune-2304-William_Clarketunes.ps 33689 PostScript
Tune-2304-William_Clarketunes.txt 262 Plain-text file with the extracted tune(s)
Tune-2304-get.log 4631 Log file, useful mostly for debugging
Tune-23040-get.log 6635 Log file, useful mostly for debugging
Tune-23044-get.log 4936 Log file, useful mostly for debugging
Tune-23045-get.log 6542 Log file, useful mostly for debugging
Tune-23047-get.log 3248 Log file, useful mostly for debugging
These files should be available for 24 hours.