Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1770/Stewart_SCAJMR_1784-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1969-Stewart_SCAJMR_1784-V1.ps) >>/Users/jc/w/tmp/Tune-1969-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1770/Stewart_SCAJMR_1784-V1.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-1969-Stewart_SCAJMR_1784-V1.abc 159 ABC music file with the extracted tune(s)
Tune-1969-Stewart_SCAJMR_1784-V1.ps 6 PostScript
Tune-1969-Stewart_SCAJMR_1784-V1.txt 159 Plain-text file with the extracted tune(s)
Tune-1969-get.log 4318 Log file, useful mostly for debugging
Tune-19691-get.log 12448 Log file, useful mostly for debugging
Tune-19692-get.log 4433 Log file, useful mostly for debugging
Tune-19693-get.log 4422 Log file, useful mostly for debugging
Tune-19694-get.log 11868 Log file, useful mostly for debugging
Tune-19695-get.log 3696 Log file, useful mostly for debugging
Tune-19696-get.log 8833 Log file, useful mostly for debugging
Tune-19697-get.log 5462 Log file, useful mostly for debugging
Tune-19698-get.log 11276 Log file, useful mostly for debugging
Tune-19699-get.log 3390 Log file, useful mostly for debugging
These files should be available for 24 hours.