Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Rare_Small/12SelectedCountryDances_1772_Rutherford.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2449-12SelectedCountryDances_1772_Rutherford.ps) >>/Users/jc/w/tmp/Tune-2449-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Rare_Small/12SelectedCountryDances_1772_Rutherford.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-2449-12SelectedCountryDances_1772_Rutherford.abc 182 ABC music file with the extracted tune(s)
Tune-2449-12SelectedCountryDances_1772_Rutherford.ps 6 PostScript
Tune-2449-12SelectedCountryDances_1772_Rutherford.txt 182 Plain-text file with the extracted tune(s)
Tune-2449-get.log 12920 Log file, useful mostly for debugging
Tune-24490-get.log 12176 Log file, useful mostly for debugging
Tune-24491-get.log 10403 Log file, useful mostly for debugging
Tune-24492-get.log 8795 Log file, useful mostly for debugging
Tune-24493-get.log 5702 Log file, useful mostly for debugging
Tune-24498-get.log 3832 Log file, useful mostly for debugging
These files should be available for 24 hours.