Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/CDoT/JamesOswald_CPC-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7916-JamesOswald_CPC-abc2.ps) >>/Users/jc/w/tmp/Tune-7916-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/CDoT/JamesOswald_CPC-abc2.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_79162.log 288545 Log file, useful mostly for debugging
Tune-7916-JamesOswald_CPC-abc2.abc 157 ABC music file with the extracted tune(s)
Tune-7916-JamesOswald_CPC-abc2.ps 6 PostScript
Tune-7916-JamesOswald_CPC-abc2.txt 157 Plain-text file with the extracted tune(s)
Tune-7916-get.log 4276 Log file, useful mostly for debugging
Tune-79162-get.log 6523 Log file, useful mostly for debugging
Tune-79165-get.log 5634 Log file, useful mostly for debugging
Tune-79166-11471_.abc 33 ABC music file with the extracted tune(s)
Tune-79166-11471_.txt 33 Plain-text file with the extracted tune(s)
Tune-79166-get.log 7947 Log file, useful mostly for debugging
These files should be available for 24 hours.