Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-65422-24CountryDances_1778_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4957-Tune-65422-24CountryDances_1778_Thompson.ps) >>/Users/jc/w/tmp/Tune-4957-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-65422-24CountryDances_1778_Thompson.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-4957-Tune-65422-24CountryDances_1778_Thompson.abc 192 ABC music file with the extracted tune(s)
Tune-4957-Tune-65422-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-4957-Tune-65422-24CountryDances_1778_Thompson.txt 192 Plain-text file with the extracted tune(s)
Tune-4957-get.log 10234 Log file, useful mostly for debugging
Tune-49571-get.log 13575 Log file, useful mostly for debugging
Tune-49572-get.log 8690 Log file, useful mostly for debugging
Tune-49573-get.log 5495 Log file, useful mostly for debugging
Tune-49575-get.log 13260 Log file, useful mostly for debugging
Tune-49576-get.log 7182 Log file, useful mostly for debugging
Tune-49578-get.log 3971 Log file, useful mostly for debugging
Tune-49579-get.log 4087 Log file, useful mostly for debugging
These files should be available for 24 hours.