Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Tweed2/DanielWright_ECPMH.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1429-DanielWright_ECPMH.ps) >>/Users/jc/w/tmp/Tune-1429-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Tweed2/DanielWright_ECPMH.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_14297.log 285735 Log file, useful mostly for debugging
Coll_14298.log 287140 Log file, useful mostly for debugging
Tune-1429-DanielWright_ECPMH.abc 157 ABC music file with the extracted tune(s)
Tune-1429-DanielWright_ECPMH.ps 6 PostScript
Tune-1429-DanielWright_ECPMH.txt 157 Plain-text file with the extracted tune(s)
Tune-1429-get.log 4242 Log file, useful mostly for debugging
Tune-14292-get.log 3384 Log file, useful mostly for debugging
Tune-14295-Thompson_V4_1773-1780_PD.abc 164 ABC music file with the extracted tune(s)
Tune-14295-Thompson_V4_1773-1780_PD.ps 6 PostScript
Tune-14295-Thompson_V4_1773-1780_PD.txt 164 Plain-text file with the extracted tune(s)
Tune-14295-get.log 4305 Log file, useful mostly for debugging
Tune-14298-Gow-CSR-abc1.abc 165 ABC music file with the extracted tune(s)
Tune-14298-Gow-CSR-abc1.ps 6 PostScript
Tune-14298-Gow-CSR-abc1.txt 165 Plain-text file with the extracted tune(s)
Tune-14298-get.log 8335 Log file, useful mostly for debugging
These files should be available for 24 hours.