Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/The_Scottish_Violinist/CSGBT_1794-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4089-CSGBT_1794-V2.ps) >>/Users/jc/w/tmp/Tune-4089-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/The_Scottish_Violinist/CSGBT_1794-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
Coll_40892.log 412212 Log file, useful mostly for debugging
Tune-4089-CSGBT_1794-V2.abc 168 ABC music file with the extracted tune(s)
Tune-4089-CSGBT_1794-V2.ps 6 PostScript
Tune-4089-CSGBT_1794-V2.txt 168 Plain-text file with the extracted tune(s)
Tune-4089-get.log 4233 Log file, useful mostly for debugging
Tune-40890-get.log 13190 Log file, useful mostly for debugging
Tune-40891-get.log 7211 Log file, useful mostly for debugging
Tune-40892-blank.abc 142 ABC music file with the extracted tune(s)
Tune-40892-blank.pdf 2217 Portable Data Format
Tune-40892-blank.ps 6 PostScript
Tune-40892-blank.txt 142 Plain-text file with the extracted tune(s)
Tune-40892-get.log 8788 Log file, useful mostly for debugging
Tune-40893-get.log 4360 Log file, useful mostly for debugging
Tune-40894-get.log 12335 Log file, useful mostly for debugging
Tune-40895-get.log 4348 Log file, useful mostly for debugging
Tune-40896-get.log 4135 Log file, useful mostly for debugging
Tune-40897-get.log 12449 Log file, useful mostly for debugging
Tune-40898-get.log 4284 Log file, useful mostly for debugging
Tune-40899-get.log 16127 Log file, useful mostly for debugging
These files should be available for 24 hours.