Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/SelectionOfDancesReelsAndWaltzes/WilliamCampbell_10thBook_1798-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1356-WilliamCampbell_10thBook_1798-V1.ps) >>/Users/jc/w/tmp/Tune-1356-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SelectionOfDancesReelsAndWaltzes/WilliamCampbell_10thBook_1798-V1.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-1356-WilliamCampbell_10thBook_1798-V1.abc 197 ABC music file with the extracted tune(s)
Tune-1356-WilliamCampbell_10thBook_1798-V1.ps 6 PostScript
Tune-1356-WilliamCampbell_10thBook_1798-V1.txt 197 Plain-text file with the extracted tune(s)
Tune-1356-get.log 8426 Log file, useful mostly for debugging
Tune-13560-get.log 4091 Log file, useful mostly for debugging
Tune-13562-get.log 7744 Log file, useful mostly for debugging
Tune-13565-get.log 4419 Log file, useful mostly for debugging
Tune-13567-get.log 5508 Log file, useful mostly for debugging
Tune-13568-get.log 4525 Log file, useful mostly for debugging
Tune-13569-get.log 3564 Log file, useful mostly for debugging
These files should be available for 24 hours.