Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Tweed1/EverydaySongBook2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4950-EverydaySongBook2.ps) >>/Users/jc/w/tmp/Tune-4950-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Tweed1/EverydaySongBook2.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-4950-EverydaySongBook2.abc 156 ABC music file with the extracted tune(s)
Tune-4950-EverydaySongBook2.ps 6 PostScript
Tune-4950-EverydaySongBook2.txt 156 Plain-text file with the extracted tune(s)
Tune-4950-get.log 4225 Log file, useful mostly for debugging
Tune-49501-get.log 4956 Log file, useful mostly for debugging
Tune-49502-get.log 4094 Log file, useful mostly for debugging
Tune-49504-get.log 12495 Log file, useful mostly for debugging
Tune-49505-StrathearnStrathspey.abc 725 ABC music file with the extracted tune(s)
Tune-49505-StrathearnStrathspey.pdf 22475 Portable Data Format
Tune-49505-StrathearnStrathspey.ps 42053 PostScript
Tune-49505-StrathearnStrathspey.txt 725 Plain-text file with the extracted tune(s)
Tune-49505-get.log 5639 Log file, useful mostly for debugging
Tune-49506-get.log 10117 Log file, useful mostly for debugging
Tune-49507-get.log 8751 Log file, useful mostly for debugging
Tune-49508-get.log 4495 Log file, useful mostly for debugging
These files should be available for 24 hours.