Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/SelectionOfDancesReelsAndWaltzes/CharlesZeuner_TremontQuadrilles1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2030-CharlesZeuner_TremontQuadrilles1.ps) >>/Users/jc/w/tmp/Tune-2030-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SelectionOfDancesReelsAndWaltzes/CharlesZeuner_TremontQuadrilles1.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_20300.log 286209 Log file, useful mostly for debugging
Coll_20305.log 265212 Log file, useful mostly for debugging
Tune-2030-CharlesZeuner_TremontQuadrilles1.abc 197 ABC music file with the extracted tune(s)
Tune-2030-CharlesZeuner_TremontQuadrilles1.ps 6 PostScript
Tune-2030-CharlesZeuner_TremontQuadrilles1.txt 197 Plain-text file with the extracted tune(s)
Tune-2030-get.log 9286 Log file, useful mostly for debugging
Tune-20301-get.log 5408 Log file, useful mostly for debugging
Tune-20303-20152_Burbanks_March.abc 676 ABC music file with the extracted tune(s)
Tune-20303-20152_Burbanks_March.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-20303-20152_Burbanks_March.ps 35337 PostScript
Tune-20303-20152_Burbanks_March.txt 676 Plain-text file with the extracted tune(s)
Tune-20303-get.log 15483 Log file, useful mostly for debugging
Tune-20305-get.log 9350 Log file, useful mostly for debugging
Tune-20307-get.log 4444 Log file, useful mostly for debugging
Tune-20309-get.log 4659 Log file, useful mostly for debugging
These files should be available for 24 hours.