Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1760/ERM-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9548-ERM-V1.ps) >>/Users/jc/w/tmp/Tune-9548-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1760/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
Find_95485.log 1550 Log file, useful mostly for debugging
Sess-95484.log 12012 Log file, useful mostly for debugging
Tune-9548-ERM-V1.abc 143 ABC music file with the extracted tune(s)
Tune-9548-ERM-V1.ps 6 PostScript
Tune-9548-ERM-V1.txt 143 Plain-text file with the extracted tune(s)
Tune-9548-get.log 3982 Log file, useful mostly for debugging
Tune-95481-Amarillis.abc 347 ABC music file with the extracted tune(s)
Tune-95481-Amarillis.ps 33293 PostScript
Tune-95481-Amarillis.txt 347 Plain-text file with the extracted tune(s)
Tune-95481-get.log 4425 Log file, useful mostly for debugging
Tune-95483-get.log 2803 Log file, useful mostly for debugging
Tune-95487-get.log 4963 Log file, useful mostly for debugging
These files should be available for 24 hours.