Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/GftF/band8.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8088-band8.ps) >>/Users/jc/w/tmp/Tune-8088-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/GftF/band8.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_80889.log 1495 Log file, useful mostly for debugging
Tune-8088-band8.abc 142 ABC music file with the extracted tune(s)
Tune-8088-band8.ps 6 PostScript
Tune-8088-band8.txt 142 Plain-text file with the extracted tune(s)
Tune-8088-get.log 3963 Log file, useful mostly for debugging
Tune-80883-get.log 10682 Log file, useful mostly for debugging
Tune-80885-get.log 4939 Log file, useful mostly for debugging
Tune-80886-get.log 5871 Log file, useful mostly for debugging
Tune-80887-AMHSI-abc1.abc 147 ABC music file with the extracted tune(s)
Tune-80887-AMHSI-abc1.ps 6 PostScript
Tune-80887-AMHSI-abc1.txt 147 Plain-text file with the extracted tune(s)
Tune-80887-get.log 7765 Log file, useful mostly for debugging
Tune-80888-get.log 5367 Log file, useful mostly for debugging
Tune-80889-get.log 1398 Log file, useful mostly for debugging
These files should be available for 24 hours.