pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77372-Ivy_Leaf_The_4.ps) >>/Users/jc/w/tmp/Tune-77372-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/iv/Ivy_Leaf_The_4.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
Form_77372.log 734 Log file, useful mostly for debugging
Tune-77372-Ivy_Leaf_The_4.abc 330 ABC music file with the extracted tune(s)
Tune-77372-Ivy_Leaf_The_4.ps 35325 PostScript
Tune-77372-Ivy_Leaf_The_4.txt 330 Plain-text file with the extracted tune(s)
Tune-77372-get.log 4362 Log file, useful mostly for debugging
These files should be available for 24 hours.