Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/oneills/1001/F/06.abc"
X:668 not found in http://john-chambers.us/~jc/music/book/oneills/1001/F/06.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-28966-06.ps) >>/Users/jc/w/tmp/Tune-28966-get.log 2>&1" returned status 256
Error exit status 256; here are some files to check: