Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM2/ERM-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4517-ERM-V2.ps) >>/Users/jc/w/tmp/Tune-4517-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM2/ERM-V2.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_45170.log 630611 Log file, useful mostly for debugging
Tune-4517-ERM-V2.abc 142 ABC music file with the extracted tune(s)
Tune-4517-ERM-V2.ps 6 PostScript
Tune-4517-ERM-V2.txt 142 Plain-text file with the extracted tune(s)
Tune-4517-get.log 7496 Log file, useful mostly for debugging
Tune-45171-get.log 14867 Log file, useful mostly for debugging
Tune-45172-get.log 9015 Log file, useful mostly for debugging
Tune-45173-get.log 8138 Log file, useful mostly for debugging
Tune-45174-get.log 4030 Log file, useful mostly for debugging
Tune-45175-get.log 3346 Log file, useful mostly for debugging
Tune-45176-24CountryDances_1805_Gray_Thompson.abc 174 ABC music file with the extracted tune(s)
Tune-45176-24CountryDances_1805_Gray_Thompson.ps 6 PostScript
Tune-45176-24CountryDances_1805_Gray_Thompson.txt 174 Plain-text file with the extracted tune(s)
Tune-45176-get.log 5832 Log file, useful mostly for debugging
Tune-45177-get.log 4776 Log file, useful mostly for debugging
Tune-45178-get.log 9565 Log file, useful mostly for debugging
Tune-45179-get.log 9984 Log file, useful mostly for debugging
These files should be available for 24 hours.