Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/abc1/24CountryDances_1766_Johnson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5013-24CountryDances_1766_Johnson.ps) >>/Users/jc/w/tmp/Tune-5013-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/abc1/24CountryDances_1766_Johnson.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_50138.log 1670 Log file, useful mostly for debugging
Tune-5013-24CountryDances_1766_Johnson.abc 165 ABC music file with the extracted tune(s)
Tune-5013-24CountryDances_1766_Johnson.ps 6 PostScript
Tune-5013-24CountryDances_1766_Johnson.txt 165 Plain-text file with the extracted tune(s)
Tune-5013-get.log 4440 Log file, useful mostly for debugging
Tune-50130-get.log 1605 Log file, useful mostly for debugging
Tune-50134-get.log 3104 Log file, useful mostly for debugging
These files should be available for 24 hours.