Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM4/EverydaySongBook1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3738-EverydaySongBook1.ps) >>/Users/jc/w/tmp/Tune-3738-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM4/EverydaySongBook1.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-3738-EverydaySongBook1.abc 153 ABC music file with the extracted tune(s)
Tune-3738-EverydaySongBook1.ps 6 PostScript
Tune-3738-EverydaySongBook1.txt 153 Plain-text file with the extracted tune(s)
Tune-3738-get.log 4205 Log file, useful mostly for debugging
Tune-37380-Thompson_V4_1773-1780_PD.abc 176 ABC music file with the extracted tune(s)
Tune-37380-Thompson_V4_1773-1780_PD.txt 176 Plain-text file with the extracted tune(s)
Tune-37380-get.log 8640 Log file, useful mostly for debugging
Tune-37381-get.log 3200 Log file, useful mostly for debugging
Tune-37383-get.log 8592 Log file, useful mostly for debugging
Tune-37384-get.log 11134 Log file, useful mostly for debugging
Tune-37385-get.log 6471 Log file, useful mostly for debugging
Tune-37386-get.log 9604 Log file, useful mostly for debugging
Tune-37388-get.log 5414 Log file, useful mostly for debugging
Tune-37389-get.log 8473 Log file, useful mostly for debugging
These files should be available for 24 hours.