Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-65936-GentlemansMagazine.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8498-Tune-65936-GentlemansMagazine.ps) >>/Users/jc/w/tmp/Tune-8498-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-65936-GentlemansMagazine.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_84982.log 490612 Log file, useful mostly for debugging
Tune-8498-Tune-65936-GentlemansMagazine.abc 181 ABC music file with the extracted tune(s)
Tune-8498-Tune-65936-GentlemansMagazine.ps 6 PostScript
Tune-8498-Tune-65936-GentlemansMagazine.txt 181 Plain-text file with the extracted tune(s)
Tune-8498-get.log 8942 Log file, useful mostly for debugging
Tune-84981-get.log 8272 Log file, useful mostly for debugging
Tune-84983-get.log 10036 Log file, useful mostly for debugging
Tune-84985-get.log 7993 Log file, useful mostly for debugging
Tune-84986-get.log 5252 Log file, useful mostly for debugging
Tune-84987-get.log 8985 Log file, useful mostly for debugging
Tune-84988-get.log 16800 Log file, useful mostly for debugging
Tune-84989-get.log 12603 Log file, useful mostly for debugging
These files should be available for 24 hours.