Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book19/24CountryDances_1796_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8407-24CountryDances_1796_Preston.ps) >>/Users/jc/w/tmp/Tune-8407-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book19/24CountryDances_1796_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_84079.log 168302 Log file, useful mostly for debugging
Tune-8407-24CountryDances_1796_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-8407-24CountryDances_1796_Preston.ps 6 PostScript
Tune-8407-24CountryDances_1796_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-8407-get.log 11110 Log file, useful mostly for debugging
Tune-84070-get.log 11348 Log file, useful mostly for debugging
Tune-84071-get.log 4489 Log file, useful mostly for debugging
Tune-84073-get.log 4125 Log file, useful mostly for debugging
Tune-84074-24CountryDances_1774_Thompson.abc 182 ABC music file with the extracted tune(s)
Tune-84074-24CountryDances_1774_Thompson.txt 182 Plain-text file with the extracted tune(s)
Tune-84074-get.log 14953 Log file, useful mostly for debugging
Tune-84075-Feuillet_Essex_FtFIoD1.abc 166 ABC music file with the extracted tune(s)
Tune-84075-Feuillet_Essex_FtFIoD1.pdf 2217 Portable Data Format
Tune-84075-Feuillet_Essex_FtFIoD1.ps 6 PostScript
Tune-84075-Feuillet_Essex_FtFIoD1.txt 166 Plain-text file with the extracted tune(s)
Tune-84075-get.log 9737 Log file, useful mostly for debugging
Tune-84076-get.log 4530 Log file, useful mostly for debugging
Tune-84077-get.log 5433 Log file, useful mostly for debugging
Tune-84078-get.log 8982 Log file, useful mostly for debugging
Tune-84079-get.log 3492 Log file, useful mostly for debugging
These files should be available for 24 hours.