Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/waifs/CaledonianMusicalRepository_1806.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3591-CaledonianMusicalRepository_1806.ps) >>/Users/jc/w/tmp/Tune-3591-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/waifs/CaledonianMusicalRepository_1806.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_35910.log 758618 Log file, useful mostly for debugging
Coll_35913.log 279208 Log file, useful mostly for debugging
Coll_35918.log 277809 Log file, useful mostly for debugging
Form_3591.log 925 Log file, useful mostly for debugging
Sess-35911.log 189740 Log file, useful mostly for debugging
Tune-3591-CaledonianMusicalRepository_1806.abc 170 ABC music file with the extracted tune(s)
Tune-3591-CaledonianMusicalRepository_1806.ps 6 PostScript
Tune-3591-CaledonianMusicalRepository_1806.txt 170 Plain-text file with the extracted tune(s)
Tune-3591-get.log 4532 Log file, useful mostly for debugging
Tune-35918-get.log 3621 Log file, useful mostly for debugging
These files should be available for 24 hours.