Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book49/24CountryDances_1804_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8439-24CountryDances_1804_Preston.ps) >>/Users/jc/w/tmp/Tune-8439-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book49/24CountryDances_1804_Preston.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_84393.log 291812 Log file, useful mostly for debugging
Tune-8439-24CountryDances_1804_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-8439-24CountryDances_1804_Preston.ps 6 PostScript
Tune-8439-24CountryDances_1804_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-8439-get.log 4450 Log file, useful mostly for debugging
Tune-84391-get.log 4565 Log file, useful mostly for debugging
Tune-84392-get.log 4446 Log file, useful mostly for debugging
Tune-84393-get.log 9050 Log file, useful mostly for debugging
Tune-84394-get.log 13981 Log file, useful mostly for debugging
Tune-84395-get.log 3588 Log file, useful mostly for debugging
Tune-84398-get.log 5443 Log file, useful mostly for debugging
These files should be available for 24 hours.