Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1805/ArthursSeatWaltzes.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6597-ArthursSeatWaltzes.ps) >>/Users/jc/w/tmp/Tune-6597-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1805/ArthursSeatWaltzes.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_65971.log 374250 Log file, useful mostly for debugging
Coll_65976.log 268878 Log file, useful mostly for debugging
Coll_65977.log 163446 Log file, useful mostly for debugging
Tune-6597-ArthursSeatWaltzes.abc 155 ABC music file with the extracted tune(s)
Tune-6597-ArthursSeatWaltzes.ps 6 PostScript
Tune-6597-ArthursSeatWaltzes.txt 155 Plain-text file with the extracted tune(s)
Tune-6597-get.log 4232 Log file, useful mostly for debugging
Tune-65972-get.log 1454 Log file, useful mostly for debugging
Tune-65973-get.log 8624 Log file, useful mostly for debugging
These files should be available for 24 hours.