Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Entry/24CountryDances_1800_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7154-24CountryDances_1800_Preston.ps) >>/Users/jc/w/tmp/Tune-7154-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Entry/24CountryDances_1800_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_71547.log 159716 Log file, useful mostly for debugging
Tune-7154-24CountryDances_1800_Preston.abc 166 ABC music file with the extracted tune(s)
Tune-7154-24CountryDances_1800_Preston.ps 6 PostScript
Tune-7154-24CountryDances_1800_Preston.txt 166 Plain-text file with the extracted tune(s)
Tune-7154-get.log 4444 Log file, useful mostly for debugging
Tune-71540-get.log 2802 Log file, useful mostly for debugging
Tune-71541-get.log 12460 Log file, useful mostly for debugging
Tune-71542-get.log 8404 Log file, useful mostly for debugging
Tune-71543-24CountryDances_1808_Goulding_AK.abc 171 ABC music file with the extracted tune(s)
Tune-71543-24CountryDances_1808_Goulding_AK.pdf 2217 Portable Data Format
Tune-71543-24CountryDances_1808_Goulding_AK.ps 6 PostScript
Tune-71543-24CountryDances_1808_Goulding_AK.txt 171 Plain-text file with the extracted tune(s)
Tune-71543-get.log 8892 Log file, useful mostly for debugging
Tune-71549-get.log 5447 Log file, useful mostly for debugging
These files should be available for 24 hours.