Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1765/PaulBackstrom-LfD.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5363-PaulBackstrom-LfD.ps) >>/Users/jc/w/tmp/Tune-5363-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1765/PaulBackstrom-LfD.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-5363-PaulBackstrom-LfD.abc 154 ABC music file with the extracted tune(s)
Tune-5363-PaulBackstrom-LfD.ps 6 PostScript
Tune-5363-PaulBackstrom-LfD.txt 154 Plain-text file with the extracted tune(s)
Tune-5363-get.log 5580 Log file, useful mostly for debugging
Tune-53630-get.log 5020 Log file, useful mostly for debugging
Tune-53635-10441_In_the_Garb_of_Old_Gaul.abc 620 ABC music file with the extracted tune(s)
Tune-53635-10441_In_the_Garb_of_Old_Gaul.txt 620 Plain-text file with the extracted tune(s)
Tune-53635-get.log 3462 Log file, useful mostly for debugging
These files should be available for 24 hours.