Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/12Minuets12Dances/band8.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2336-band8.ps) >>/Users/jc/w/tmp/Tune-2336-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/12Minuets12Dances/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
Coll_2336.log 264661 Log file, useful mostly for debugging
Coll_23364.log 266066 Log file, useful mostly for debugging
Coll_23367.log 261851 Log file, useful mostly for debugging
Form_23360.log 990 Log file, useful mostly for debugging
Form_23363.log 996 Log file, useful mostly for debugging
Sess-23364.log 2133644 Log file, useful mostly for debugging
Tune-2336-band8.abc 155 ABC music file with the extracted tune(s)
Tune-2336-band8.ps 6 PostScript
Tune-2336-band8.txt 155 Plain-text file with the extracted tune(s)
Tune-2336-get.log 10849 Log file, useful mostly for debugging
Tune-23362-get.log 8023 Log file, useful mostly for debugging
Tune-23364-get.log 8930 Log file, useful mostly for debugging
Tune-23367-get.log 8779 Log file, useful mostly for debugging
Tune-23368-get.log 5351 Log file, useful mostly for debugging
Tune-23369-get.log 4438 Log file, useful mostly for debugging
These files should be available for 24 hours.