Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1777/Jean_Henry_dAnglebert_PdC1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4227-Jean_Henry_dAnglebert_PdC1.ps) >>/Users/jc/w/tmp/Tune-4227-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1777/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_4227.log 468209 Log file, useful mostly for debugging
Coll_42273.log 808229 Log file, useful mostly for debugging
Coll_42279.log 277810 Log file, useful mostly for debugging
Tune-4227-Jean_Henry_dAnglebert_PdC1.abc 163 ABC music file with the extracted tune(s)
Tune-4227-Jean_Henry_dAnglebert_PdC1.ps 6 PostScript
Tune-4227-Jean_Henry_dAnglebert_PdC1.txt 163 Plain-text file with the extracted tune(s)
Tune-4227-get.log 4400 Log file, useful mostly for debugging
Tune-42271-get.log 160459 Log file, useful mostly for debugging
Tune-42273-get.log 4241 Log file, useful mostly for debugging
These files should be available for 24 hours.