Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-68815-00_title.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4306-Tune-68815-00_title.ps) >>/Users/jc/w/tmp/Tune-4306-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-68815-00_title.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-4306-Tune-68815-00_title.abc 171 ABC music file with the extracted tune(s)
Tune-4306-Tune-68815-00_title.ps 6 PostScript
Tune-4306-Tune-68815-00_title.txt 171 Plain-text file with the extracted tune(s)
Tune-4306-get.log 9688 Log file, useful mostly for debugging
Tune-43060-get.log 8198 Log file, useful mostly for debugging
Tune-43061-get.log 10903 Log file, useful mostly for debugging
Tune-43066-get.log 7414 Log file, useful mostly for debugging
Tune-43067-get.log 9005 Log file, useful mostly for debugging
Tune-43068-get.log 6077 Log file, useful mostly for debugging
These files should be available for 24 hours.