Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Pioneer/GoldenBookOfFavoriteSongs1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4778-GoldenBookOfFavoriteSongs1.ps) >>/Users/jc/w/tmp/Tune-4778-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Pioneer/GoldenBookOfFavoriteSongs1.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_47783.log 320860 Log file, useful mostly for debugging
Form_47783.log 826 Log file, useful mostly for debugging
Tune-4778-GoldenBookOfFavoriteSongs1.abc 166 ABC music file with the extracted tune(s)
Tune-4778-GoldenBookOfFavoriteSongs1.ps 6 PostScript
Tune-4778-GoldenBookOfFavoriteSongs1.txt 166 Plain-text file with the extracted tune(s)
Tune-4778-get.log 9919 Log file, useful mostly for debugging
Tune-47784-get.log 3276 Log file, useful mostly for debugging
These files should be available for 24 hours.