pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9324-Chalumeau_55.ps) >>/Users/jc/w/tmp/Tune-9324-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/campin.me.uk/Chalumeau_55.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_93246.log 277899 Log file, useful mostly for debugging
Form_93243.log 1533 Log file, useful mostly for debugging
Tune-9324-Chalumeau_55.abc 241 ABC music file with the extracted tune(s)
Tune-9324-Chalumeau_55.ps 32997 PostScript
Tune-9324-Chalumeau_55.txt 241 Plain-text file with the extracted tune(s)
Tune-9324-get.log 5716 Log file, useful mostly for debugging
Tune-93241-get.log 3144 Log file, useful mostly for debugging
Tune-93244-get.log 3534 Log file, useful mostly for debugging
Tune-93247-get.log 3047 Log file, useful mostly for debugging
Tune-93248-get.log 11126 Log file, useful mostly for debugging
These files should be available for 24 hours.