Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book40/24AmericanCountryDances_1785_Cantelo.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5522-24AmericanCountryDances_1785_Cantelo.ps) >>/Users/jc/w/tmp/Tune-5522-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book40/24AmericanCountryDances_1785_Cantelo.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-5522-24AmericanCountryDances_1785_Cantelo.abc 175 ABC music file with the extracted tune(s)
Tune-5522-24AmericanCountryDances_1785_Cantelo.ps 6 PostScript
Tune-5522-24AmericanCountryDances_1785_Cantelo.txt 175 Plain-text file with the extracted tune(s)
Tune-5522-get.log 4624 Log file, useful mostly for debugging
Tune-55220-get.log 8196 Log file, useful mostly for debugging
Tune-55222-get.log 10121 Log file, useful mostly for debugging
Tune-55223-get.log 4886 Log file, useful mostly for debugging
Tune-55224-get.log 4218 Log file, useful mostly for debugging
Tune-55226-get.log 7398 Log file, useful mostly for debugging
Tune-55227-get.log 12619 Log file, useful mostly for debugging
These files should be available for 24 hours.