Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/10thBook/Collections.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4342-Collections.ps) >>/Users/jc/w/tmp/Tune-4342-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/10thBook/Collections.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-4342-Collections.abc 152 ABC music file with the extracted tune(s)
Tune-4342-Collections.ps 6 PostScript
Tune-4342-Collections.txt 152 Plain-text file with the extracted tune(s)
Tune-4342-get.log 7327 Log file, useful mostly for debugging
Tune-43420-get.log 7430 Log file, useful mostly for debugging
Tune-43421-get.log 11095 Log file, useful mostly for debugging
Tune-43423-get.log 4886 Log file, useful mostly for debugging
Tune-43424-Gow-CSR-abc1.abc 151 ABC music file with the extracted tune(s)
Tune-43424-Gow-CSR-abc1.txt 151 Plain-text file with the extracted tune(s)
Tune-43424-get.log 3232 Log file, useful mostly for debugging
Tune-43427-get.log 4205 Log file, useful mostly for debugging
These files should be available for 24 hours.