Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1804/CaledonianCountryDances.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9369-CaledonianCountryDances.ps) >>/Users/jc/w/tmp/Tune-9369-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1804/CaledonianCountryDances.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_93696.log 287610 Log file, useful mostly for debugging
Tune-9369-CaledonianCountryDances.abc 160 ABC music file with the extracted tune(s)
Tune-9369-CaledonianCountryDances.ps 6 PostScript
Tune-9369-CaledonianCountryDances.txt 160 Plain-text file with the extracted tune(s)
Tune-9369-get.log 4337 Log file, useful mostly for debugging
Tune-93690-get.log 4670 Log file, useful mostly for debugging
Tune-93691-get.log 7725 Log file, useful mostly for debugging
Tune-93693-get.log 7109 Log file, useful mostly for debugging
Tune-93694-get.log 3730 Log file, useful mostly for debugging
Tune-93695-get.log 9391 Log file, useful mostly for debugging
Tune-93696-get.log 4590 Log file, useful mostly for debugging
Tune-93697-get.log 7989 Log file, useful mostly for debugging
Tune-93699-get.log 3988 Log file, useful mostly for debugging
These files should be available for 24 hours.