Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book38/24CountryDances_1813_Button_Whitaker.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1250-24CountryDances_1813_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-1250-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book38/24CountryDances_1813_Button_Whitaker.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_12505.log 161666 Log file, useful mostly for debugging
Coll_12507.log 282010 Log file, useful mostly for debugging
List12501.log 164 Log file, useful mostly for debugging
Tune-1250-24CountryDances_1813_Button_Whitaker.abc 175 ABC music file with the extracted tune(s)
Tune-1250-24CountryDances_1813_Button_Whitaker.ps 6 PostScript
Tune-1250-24CountryDances_1813_Button_Whitaker.txt 175 Plain-text file with the extracted tune(s)
Tune-1250-get.log 10311 Log file, useful mostly for debugging
Tune-12500-get.log 77101 Log file, useful mostly for debugging
Tune-12501-get.log 3350 Log file, useful mostly for debugging
Tune-12502-get.log 11373 Log file, useful mostly for debugging
Tune-12508-get.log 3540 Log file, useful mostly for debugging
Tune-12509-get.log 5416 Log file, useful mostly for debugging
These files should be available for 24 hours.