Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/slide/FOEFDA.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4363-FOEFDA.ps) >>/Users/jc/w/tmp/Tune-4363-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/slide/FOEFDA.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_43630.log 276409 Log file, useful mostly for debugging
Coll_43631.log 823630 Log file, useful mostly for debugging
Coll_43633.log 469611 Log file, useful mostly for debugging
Coll_43636.log 458410 Log file, useful mostly for debugging
Coll_43639.log 454210 Log file, useful mostly for debugging
Form_43630.log 998 Log file, useful mostly for debugging
Form_43631.log 1038 Log file, useful mostly for debugging
Form_43632.log 872 Log file, useful mostly for debugging
Form_43637.log 1026 Log file, useful mostly for debugging
Form_43638.log 1117 Log file, useful mostly for debugging
Tune-4363-FOEFDA.abc 144 ABC music file with the extracted tune(s)
Tune-4363-FOEFDA.ps 6 PostScript
Tune-4363-FOEFDA.txt 144 Plain-text file with the extracted tune(s)
Tune-4363-get.log 3990 Log file, useful mostly for debugging
Tune-43630-get.log 9867 Log file, useful mostly for debugging
Tune-43631-get.log 3139 Log file, useful mostly for debugging
Tune-43632-get.log 10051 Log file, useful mostly for debugging
Tune-43633-get.log 45065 Log file, useful mostly for debugging
Tune-43634-get.log 6086 Log file, useful mostly for debugging
Tune-43637-get.log 22686 Log file, useful mostly for debugging
These files should be available for 24 hours.