Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1809/24CountryDances_1801_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6761-24CountryDances_1801_Preston.ps) >>/Users/jc/w/tmp/Tune-6761-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1809/24CountryDances_1801_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
Tune-6761-24CountryDances_1801_Preston.abc 165 ABC music file with the extracted tune(s)
Tune-6761-24CountryDances_1801_Preston.ps 6 PostScript
Tune-6761-24CountryDances_1801_Preston.txt 165 Plain-text file with the extracted tune(s)
Tune-6761-get.log 4446 Log file, useful mostly for debugging
Tune-67612-get.log 3322 Log file, useful mostly for debugging
Tune-67618-CSGBT_1794-V2.abc 150 ABC music file with the extracted tune(s)
Tune-67618-CSGBT_1794-V2.pdf 2217 Portable Data Format
Tune-67618-CSGBT_1794-V2.ps 6 PostScript
Tune-67618-CSGBT_1794-V2.txt 150 Plain-text file with the extracted tune(s)
Tune-67618-get.log 10981 Log file, useful mostly for debugging
Tune-67619-24CountryDances_1776_Randall.abc 165 ABC music file with the extracted tune(s)
Tune-67619-24CountryDances_1776_Randall.ps 6 PostScript
Tune-67619-24CountryDances_1776_Randall.txt 165 Plain-text file with the extracted tune(s)
Tune-67619-get.log 4373 Log file, useful mostly for debugging
These files should be available for 24 hours.