Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/HC2009/WilliamCampbell_10thBook_1798-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4112-WilliamCampbell_10thBook_1798-V2.ps) >>/Users/jc/w/tmp/Tune-4112-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HC2009/WilliamCampbell_10thBook_1798-V2.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-4112-WilliamCampbell_10thBook_1798-V2.abc 171 ABC music file with the extracted tune(s)
Tune-4112-WilliamCampbell_10thBook_1798-V2.ps 6 PostScript
Tune-4112-WilliamCampbell_10thBook_1798-V2.txt 171 Plain-text file with the extracted tune(s)
Tune-4112-get.log 4540 Log file, useful mostly for debugging
Tune-41120-get.log 4839 Log file, useful mostly for debugging
Tune-41122-Gow-CSR1-abc1.abc 152 ABC music file with the extracted tune(s)
Tune-41122-Gow-CSR1-abc1.pdf 2217 Portable Data Format
Tune-41122-Gow-CSR1-abc1.ps 6 PostScript
Tune-41122-Gow-CSR1-abc1.txt 152 Plain-text file with the extracted tune(s)
Tune-41122-get.log 4983 Log file, useful mostly for debugging
Tune-41123-get.log 3262 Log file, useful mostly for debugging
These files should be available for 24 hours.