Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM1/v3tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5377-v3tune.ps) >>/Users/jc/w/tmp/Tune-5377-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM1/v3tune.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-5377-get.log 8550 Log file, useful mostly for debugging
Tune-5377-v3tune.abc 142 ABC music file with the extracted tune(s)
Tune-5377-v3tune.ps 6 PostScript
Tune-5377-v3tune.txt 142 Plain-text file with the extracted tune(s)
Tune-53771-get.log 4324 Log file, useful mostly for debugging
Tune-53772-get.log 5051 Log file, useful mostly for debugging
Tune-53773-Jean_Henry_dAnglebert_PdC1.abc 165 ABC music file with the extracted tune(s)
Tune-53773-Jean_Henry_dAnglebert_PdC1.ps 6 PostScript
Tune-53773-Jean_Henry_dAnglebert_PdC1.txt 165 Plain-text file with the extracted tune(s)
Tune-53773-get.log 4341 Log file, useful mostly for debugging
Tune-53775-get.log 9192 Log file, useful mostly for debugging
Tune-53777-get.log 8934 Log file, useful mostly for debugging
Tune-53778-get.log 5432 Log file, useful mostly for debugging
Tune-53779-get.log 8169 Log file, useful mostly for debugging
These files should be available for 24 hours.