Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Pioneer/JamesOswald_CPC-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9547-JamesOswald_CPC-abc2.ps) >>/Users/jc/w/tmp/Tune-9547-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Pioneer/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
Tune-9547-JamesOswald_CPC-abc2.abc 160 ABC music file with the extracted tune(s)
Tune-9547-JamesOswald_CPC-abc2.ps 6 PostScript
Tune-9547-JamesOswald_CPC-abc2.txt 160 Plain-text file with the extracted tune(s)
Tune-9547-get.log 7896 Log file, useful mostly for debugging
Tune-95471-get.log 18301 Log file, useful mostly for debugging
Tune-95472-24CountryDances_1811_Goulding_dAlmaine_Potter.abc 184 ABC music file with the extracted tune(s)
Tune-95472-24CountryDances_1811_Goulding_dAlmaine_Potter.ps 6 PostScript
Tune-95472-24CountryDances_1811_Goulding_dAlmaine_Potter.txt 184 Plain-text file with the extracted tune(s)
Tune-95472-get.log 10477 Log file, useful mostly for debugging
Tune-95473-get.log 5449 Log file, useful mostly for debugging
Tune-95474-get.log 5471 Log file, useful mostly for debugging
Tune-95478-get.log 8815 Log file, useful mostly for debugging
These files should be available for 24 hours.