Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/dup/v2tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5136-v2tune.ps) >>/Users/jc/w/tmp/Tune-5136-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/dup/v2tune.abc

Error exit status 256; here are some files to check:

[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-5136-get.log 3976 Log file, useful mostly for debugging
Tune-5136-v2tune.abc 142 ABC music file with the extracted tune(s)
Tune-5136-v2tune.ps 6 PostScript
Tune-5136-v2tune.txt 142 Plain-text file with the extracted tune(s)
Tune-51360-get.log 6185 Log file, useful mostly for debugging
Tune-51364-get.log 5820 Log file, useful mostly for debugging
Tune-51365-get.log 1594 Log file, useful mostly for debugging
Tune-51368-get.log 4016 Log file, useful mostly for debugging
These files should be available for 24 hours.