Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/CCCCD/Round_Band_Book_of_Playford.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5496-Round_Band_Book_of_Playford.ps) >>/Users/jc/w/tmp/Tune-5496-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/CCCCD/Round_Band_Book_of_Playford.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-5496-Round_Band_Book_of_Playford.abc 165 ABC music file with the extracted tune(s)
Tune-5496-Round_Band_Book_of_Playford.ps 6 PostScript
Tune-5496-Round_Band_Book_of_Playford.txt 165 Plain-text file with the extracted tune(s)
Tune-5496-get.log 8300 Log file, useful mostly for debugging
Tune-54960-get.log 1584 Log file, useful mostly for debugging
Tune-54965-get.log 1442 Log file, useful mostly for debugging
Tune-54966-get.log 1582 Log file, useful mostly for debugging
Tune-86168-Tune-5496-10920_.abc 168 ABC music file with the extracted tune(s)
Tune-86168-Tune-5496-10920_.ps 6 PostScript
Tune-86168-Tune-5496-10920_.txt 168 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.