Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1783/WilliamCampbell_10thBook_1798-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6821-WilliamCampbell_10thBook_1798-V1.ps) >>/Users/jc/w/tmp/Tune-6821-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1783/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-6821-WilliamCampbell_10thBook_1798-V1.abc 169 ABC music file with the extracted tune(s)
Tune-6821-WilliamCampbell_10thBook_1798-V1.ps 6 PostScript
Tune-6821-WilliamCampbell_10thBook_1798-V1.txt 169 Plain-text file with the extracted tune(s)
Tune-6821-get.log 4526 Log file, useful mostly for debugging
Tune-68214-GoodForTheTongueHornpipe.abc 447 ABC music file with the extracted tune(s)
Tune-68214-GoodForTheTongueHornpipe.pdf 17054 Portable Data Format
Tune-68214-GoodForTheTongueHornpipe.ps 37022 PostScript
Tune-68214-GoodForTheTongueHornpipe.txt 447 Plain-text file with the extracted tune(s)
Tune-68214-get.log 5794 Log file, useful mostly for debugging
These files should be available for 24 hours.