Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1771/BotCDaSS.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4329-BotCDaSS.ps) >>/Users/jc/w/tmp/Tune-4329-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1771/BotCDaSS.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-4329-BotCDaSS.abc 145 ABC music file with the extracted tune(s)
Tune-4329-BotCDaSS.ps 6 PostScript
Tune-4329-BotCDaSS.txt 145 Plain-text file with the extracted tune(s)
Tune-4329-get.log 4024 Log file, useful mostly for debugging
Tune-43291-get.log 4177 Log file, useful mostly for debugging
Tune-43296-AbrahamMackintosh.abc 154 ABC music file with the extracted tune(s)
Tune-43296-AbrahamMackintosh.ps 6 PostScript
Tune-43296-AbrahamMackintosh.txt 154 Plain-text file with the extracted tune(s)
Tune-43296-get.log 7112 Log file, useful mostly for debugging
Tune-43298-get.log 4197 Log file, useful mostly for debugging
Tune-43299-get.log 4407 Log file, useful mostly for debugging
These files should be available for 24 hours.