Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Compleat_Tutor/BotCDaSS.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2729-BotCDaSS.ps) >>/Users/jc/w/tmp/Tune-2729-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Compleat_Tutor/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
Coll_27290.log 343341 Log file, useful mostly for debugging
Coll_27292.log 261851 Log file, useful mostly for debugging
Coll_27295.log 263256 Log file, useful mostly for debugging
Coll_27296.log 520892 Log file, useful mostly for debugging
Form_27296.log 834 Log file, useful mostly for debugging
Tune-2729-BotCDaSS.abc 155 ABC music file with the extracted tune(s)
Tune-2729-BotCDaSS.ps 6 PostScript
Tune-2729-BotCDaSS.txt 155 Plain-text file with the extracted tune(s)
Tune-2729-get.log 4084 Log file, useful mostly for debugging
Tune-27293-get.log 5949 Log file, useful mostly for debugging
Tune-27295-get.log 5452 Log file, useful mostly for debugging
These files should be available for 24 hours.