Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1777/JeanWhite_HRJCD.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1861-JeanWhite_HRJCD.ps) >>/Users/jc/w/tmp/Tune-1861-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1777/JeanWhite_HRJCD.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_18611.log 286212 Log file, useful mostly for debugging
Tune-1861-JeanWhite_HRJCD.abc 152 ABC music file with the extracted tune(s)
Tune-1861-JeanWhite_HRJCD.ps 6 PostScript
Tune-1861-JeanWhite_HRJCD.txt 152 Plain-text file with the extracted tune(s)
Tune-1861-get.log 4171 Log file, useful mostly for debugging
Tune-18610-get.log 1274 Log file, useful mostly for debugging
These files should be available for 24 hours.