Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-65736-24FavouriteDances_1779_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9348-Tune-65736-24FavouriteDances_1779_Straight.ps) >>/Users/jc/w/tmp/Tune-9348-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-65736-24FavouriteDances_1779_Straight.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_9348.log 157116 Log file, useful mostly for debugging
Coll_93480.log 672612 Log file, useful mostly for debugging
Tune-9348-AndersonsBudgetV1.abc 160 ABC music file with the extracted tune(s)
Tune-9348-AndersonsBudgetV1.txt 160 Plain-text file with the extracted tune(s)
Tune-9348-Tune-65736-24FavouriteDances_1779_Straight.abc 194 ABC music file with the extracted tune(s)
Tune-9348-Tune-65736-24FavouriteDances_1779_Straight.ps 6 PostScript
Tune-9348-Tune-65736-24FavouriteDances_1779_Straight.txt 194 Plain-text file with the extracted tune(s)
Tune-9348-get.log 11725 Log file, useful mostly for debugging
Tune-93480-get.log 5551 Log file, useful mostly for debugging
Tune-93481-get.log 8785 Log file, useful mostly for debugging
Tune-93482-get.log 18675 Log file, useful mostly for debugging
Tune-93483-24CountryDances_1805_Gray_Thompson.abc 171 ABC music file with the extracted tune(s)
Tune-93483-24CountryDances_1805_Gray_Thompson.txt 171 Plain-text file with the extracted tune(s)
Tune-93483-get.log 12308 Log file, useful mostly for debugging
Tune-93484-get.log 4597 Log file, useful mostly for debugging
Tune-93485-get.log 9563 Log file, useful mostly for debugging
Tune-93486-get.log 8818 Log file, useful mostly for debugging
Tune-93487-get.log 9041 Log file, useful mostly for debugging
Tune-93488-get.log 4676 Log file, useful mostly for debugging
These files should be available for 24 hours.