Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1762/Hamilton_HUTB1-1844-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2593-Hamilton_HUTB1-1844-V1.ps) >>/Users/jc/w/tmp/Tune-2593-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1762/Hamilton_HUTB1-1844-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
Coll_25930.log 251211 Log file, useful mostly for debugging
Coll_25938.log 141450 Log file, useful mostly for debugging
Form_25938.log 998 Log file, useful mostly for debugging
Tune-2593-Hamilton_HUTB1-1844-V1.abc 159 ABC music file with the extracted tune(s)
Tune-2593-Hamilton_HUTB1-1844-V1.ps 6 PostScript
Tune-2593-Hamilton_HUTB1-1844-V1.txt 159 Plain-text file with the extracted tune(s)
Tune-2593-get.log 4318 Log file, useful mostly for debugging
Tune-25932-get.log 8384 Log file, useful mostly for debugging
Tune-25935-get.log 5837 Log file, useful mostly for debugging
Tune-25936-get.log 5495 Log file, useful mostly for debugging
These files should be available for 24 hours.