Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Graded2/Wilson_Harmony_4NCD_1812_V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7213-Wilson_Harmony_4NCD_1812_V2.ps) >>/Users/jc/w/tmp/Tune-7213-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Graded2/Wilson_Harmony_4NCD_1812_V2.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-7213-Wilson_Harmony_4NCD_1812_V2.abc 167 ABC music file with the extracted tune(s)
Tune-7213-Wilson_Harmony_4NCD_1812_V2.ps 6 PostScript
Tune-7213-Wilson_Harmony_4NCD_1812_V2.txt 167 Plain-text file with the extracted tune(s)
Tune-7213-get.log 9004 Log file, useful mostly for debugging
Tune-72130-get.log 4507 Log file, useful mostly for debugging
Tune-72131-get.log 10919 Log file, useful mostly for debugging
Tune-72132-get.log 4366 Log file, useful mostly for debugging
Tune-72135-get.log 5578 Log file, useful mostly for debugging
Tune-72138-get.log 7835 Log file, useful mostly for debugging
These files should be available for 24 hours.