Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM2/Jean_Henry_dAnglebert_PdC1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-46398-Jean_Henry_dAnglebert_PdC1.ps) >>/Users/jc/w/tmp/Tune-46398-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM2/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
Coll_46398.log 280610 Log file, useful mostly for debugging
Tune-46398-Jean_Henry_dAnglebert_PdC1.abc 162 ABC music file with the extracted tune(s)
Tune-46398-Jean_Henry_dAnglebert_PdC1.ps 6 PostScript
Tune-46398-Jean_Henry_dAnglebert_PdC1.txt 162 Plain-text file with the extracted tune(s)
Tune-46398-get.log 4411 Log file, useful mostly for debugging
These files should be available for 24 hours.