Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/was/Playford_COST.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7148-Playford_COST.ps) >>/Users/jc/w/tmp/Tune-7148-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/was/Playford_COST.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-7148-Playford_COST.abc 149 ABC music file with the extracted tune(s)
Tune-7148-Playford_COST.ps 6 PostScript
Tune-7148-Playford_COST.txt 149 Plain-text file with the extracted tune(s)
Tune-7148-get.log 9585 Log file, useful mostly for debugging
Tune-71480-get.log 4198 Log file, useful mostly for debugging
Tune-71481-24CountryDances_1809_Cahusac.abc 165 ABC music file with the extracted tune(s)
Tune-71481-24CountryDances_1809_Cahusac.txt 165 Plain-text file with the extracted tune(s)
Tune-71481-get.log 3510 Log file, useful mostly for debugging
Tune-71483-get.log 5087 Log file, useful mostly for debugging
Tune-71486-get.log 5637 Log file, useful mostly for debugging
Tune-71489-get.log 9076 Log file, useful mostly for debugging
These files should be available for 24 hours.