Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/AdvancedSD/24CountryDances_1780_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4227-24CountryDances_1780_Skillern.ps) >>/Users/jc/w/tmp/Tune-4227-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/AdvancedSD/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_42276.log 430412 Log file, useful mostly for debugging
Tune-4227-24CountryDances_1780_Skillern.abc 172 ABC music file with the extracted tune(s)
Tune-4227-24CountryDances_1780_Skillern.ps 6 PostScript
Tune-4227-24CountryDances_1780_Skillern.txt 172 Plain-text file with the extracted tune(s)
Tune-4227-get.log 10271 Log file, useful mostly for debugging
Tune-42272-get.log 8035 Log file, useful mostly for debugging
Tune-42273-get.log 11546 Log file, useful mostly for debugging
Tune-42276-get.log 5721 Log file, useful mostly for debugging
Tune-42278-get.log 7105 Log file, useful mostly for debugging
Tune-42279-get.log 4498 Log file, useful mostly for debugging
These files should be available for 24 hours.