Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/cache/BostonCollection.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6317-BostonCollection.ps) >>/Users/jc/w/tmp/Tune-6317-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/cache/BostonCollection.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-6317-BostonCollection.abc 154 ABC music file with the extracted tune(s)
Tune-6317-BostonCollection.ps 6 PostScript
Tune-6317-BostonCollection.txt 154 Plain-text file with the extracted tune(s)
Tune-6317-get.log 7061 Log file, useful mostly for debugging
Tune-63170-24CountryDances_1782_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-63170-24CountryDances_1782_Thompson.ps 6 PostScript
Tune-63170-24CountryDances_1782_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-63170-get.log 4394 Log file, useful mostly for debugging
Tune-63171-get.log 1409 Log file, useful mostly for debugging
Tune-63174-CR3-abc2.abc 158 ABC music file with the extracted tune(s)
Tune-63174-CR3-abc2.ps 6 PostScript
Tune-63174-CR3-abc2.txt 158 Plain-text file with the extracted tune(s)
Tune-63174-get.log 4029 Log file, useful mostly for debugging
Tune-63176-get.log 9155 Log file, useful mostly for debugging
Tune-63177-get.log 8101 Log file, useful mostly for debugging
These files should be available for 24 hours.