Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MusiciansCompanionP2/Jean_Henry_dAnglebert_PdC1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4669-Jean_Henry_dAnglebert_PdC1.ps) >>/Users/jc/w/tmp/Tune-4669-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MusiciansCompanionP2/Jean_Henry_dAnglebert_PdC1.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-4669-Jean_Henry_dAnglebert_PdC1.abc 179 ABC music file with the extracted tune(s)
Tune-4669-Jean_Henry_dAnglebert_PdC1.ps 6 PostScript
Tune-4669-Jean_Henry_dAnglebert_PdC1.txt 179 Plain-text file with the extracted tune(s)
Tune-4669-get.log 4498 Log file, useful mostly for debugging
Tune-46693-get.log 1950 Log file, useful mostly for debugging
Tune-46697-get.log 1352 Log file, useful mostly for debugging
These files should be available for 24 hours.