Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book46/24CountryDances_1780_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8792-24CountryDances_1780_Skillern.ps) >>/Users/jc/w/tmp/Tune-8792-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book46/24CountryDances_1780_Skillern.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_87922.log 661411 Log file, useful mostly for debugging
Coll_87926.log 318140 Log file, useful mostly for debugging
Tune-8792-24CountryDances_1780_Skillern.abc 168 ABC music file with the extracted tune(s)
Tune-8792-24CountryDances_1780_Skillern.ps 6 PostScript
Tune-8792-24CountryDances_1780_Skillern.txt 168 Plain-text file with the extracted tune(s)
Tune-8792-get.log 4479 Log file, useful mostly for debugging
Tune-87922-get.log 4600 Log file, useful mostly for debugging
Tune-87923-get.log 4721 Log file, useful mostly for debugging
Tune-87924-get.log 9793 Log file, useful mostly for debugging
Tune-87925-get.log 8231 Log file, useful mostly for debugging
Tune-87926-get.log 4579 Log file, useful mostly for debugging
Tune-87927-get.log 4591 Log file, useful mostly for debugging
Tune-87929-get.log 8944 Log file, useful mostly for debugging
These files should be available for 24 hours.