pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42226-Caller_Herring_Scotch_JMT104_1.ps) >>/Users/jc/w/tmp/Tune-42226-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/ca/Caller_Herring_Scotch_JMT104_1.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_42226.log 839 Log file, useful mostly for debugging
Tune-42226-Caller_Herring_Scotch_JMT104_1.abc 357 ABC music file with the extracted tune(s)
Tune-42226-Caller_Herring_Scotch_JMT104_1.ps 36578 PostScript
Tune-42226-Caller_Herring_Scotch_JMT104_1.txt 357 Plain-text file with the extracted tune(s)
Tune-42226-get.log 4984 Log file, useful mostly for debugging
These files should be available for 24 hours.