Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-74951-24CountryDances_1782_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4863-Tune-74951-24CountryDances_1782_Thompson.ps) >>/Users/jc/w/tmp/Tune-4863-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-74951-24CountryDances_1782_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
Coll_4863.log 385612 Log file, useful mostly for debugging
Tune-4863-Tune-74951-24CountryDances_1782_Thompson.abc 192 ABC music file with the extracted tune(s)
Tune-4863-Tune-74951-24CountryDances_1782_Thompson.ps 6 PostScript
Tune-4863-Tune-74951-24CountryDances_1782_Thompson.txt 192 Plain-text file with the extracted tune(s)
Tune-4863-get.log 11660 Log file, useful mostly for debugging
Tune-48630-get.log 3658 Log file, useful mostly for debugging
Tune-48631-get.log 13064 Log file, useful mostly for debugging
Tune-48633-get.log 8084 Log file, useful mostly for debugging
Tune-48634-get.log 9216 Log file, useful mostly for debugging
Tune-48635-get.log 10736 Log file, useful mostly for debugging
Tune-48639-get.log 3997 Log file, useful mostly for debugging
These files should be available for 24 hours.