Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1774/Hamilton_HUTB1-1844-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1814-Hamilton_HUTB1-1844-V2.ps) >>/Users/jc/w/tmp/Tune-1814-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1774/Hamilton_HUTB1-1844-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
Coll_18144.log 1904311 Log file, useful mostly for debugging
Tune-1814-Hamilton_HUTB1-1844-V2.abc 159 ABC music file with the extracted tune(s)
Tune-1814-Hamilton_HUTB1-1844-V2.ps 6 PostScript
Tune-1814-Hamilton_HUTB1-1844-V2.txt 159 Plain-text file with the extracted tune(s)
Tune-1814-get.log 4318 Log file, useful mostly for debugging
Tune-18141-get.log 3662 Log file, useful mostly for debugging
Tune-18144-get.log 3526 Log file, useful mostly for debugging
Tune-18145-get.log 8768 Log file, useful mostly for debugging
Tune-18146-get.log 5666 Log file, useful mostly for debugging
Tune-18149-get.log 4672 Log file, useful mostly for debugging
These files should be available for 24 hours.