Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/mazurka/24CountryDances_1766_Johnson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2614-24CountryDances_1766_Johnson.ps) >>/Users/jc/w/tmp/Tune-2614-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/mazurka/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
Coll_26141.log 302840 Log file, useful mostly for debugging
Coll_26142.log 469608 Log file, useful mostly for debugging
Form_2614.log 1001 Log file, useful mostly for debugging
Form_26141.log 1003 Log file, useful mostly for debugging
Form_26148.log 1008 Log file, useful mostly for debugging
Tune-2614-24CountryDances_1766_Johnson.abc 168 ABC music file with the extracted tune(s)
Tune-2614-24CountryDances_1766_Johnson.ps 6 PostScript
Tune-2614-24CountryDances_1766_Johnson.txt 168 Plain-text file with the extracted tune(s)
Tune-2614-get.log 5876 Log file, useful mostly for debugging
Tune-26140-get.log 1274 Log file, useful mostly for debugging
Tune-26141-get.log 3970 Log file, useful mostly for debugging
Tune-26142-get.log 4373 Log file, useful mostly for debugging
Tune-26143-get.log 5401 Log file, useful mostly for debugging
Tune-26145-get.log 7668 Log file, useful mostly for debugging
Tune-26146-get.log 4316 Log file, useful mostly for debugging
These files should be available for 24 hours.