Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Tweed1/ERM-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5132-ERM-V1.ps) >>/Users/jc/w/tmp/Tune-5132-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Tweed1/ERM-V1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-5132-ERM-V1.abc 145 ABC music file with the extracted tune(s)
Tune-5132-ERM-V1.ps 6 PostScript
Tune-5132-ERM-V1.txt 145 Plain-text file with the extracted tune(s)
Tune-5132-get.log 3992 Log file, useful mostly for debugging
Tune-51321-get.log 3664 Log file, useful mostly for debugging
Tune-51322-get.log 62110 Log file, useful mostly for debugging
Tune-51324-get.log 99665 Log file, useful mostly for debugging
Tune-51329-get.log 5741 Log file, useful mostly for debugging
These files should be available for 24 hours.