Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Gow/CR4-abc1.pdf/CR3-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5079-CR3-abc1.ps) >>/Users/jc/w/tmp/Tune-5079-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CR4-abc1.pdf/CR3-abc1.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_50796.log 3166675 Log file, useful mostly for debugging
Coll_50797.log 122482 Log file, useful mostly for debugging
Form_5079.log 858 Log file, useful mostly for debugging
Tune-5079-CR3-abc1.abc 157 ABC music file with the extracted tune(s)
Tune-5079-CR3-abc1.ps 6 PostScript
Tune-5079-CR3-abc1.txt 157 Plain-text file with the extracted tune(s)
Tune-5079-get.log 7644 Log file, useful mostly for debugging
Tune-50791-get.log 5089 Log file, useful mostly for debugging
Tune-50792-get.log 3312 Log file, useful mostly for debugging
Tune-50793-get.log 4967 Log file, useful mostly for debugging
Tune-50794-get.log 4352 Log file, useful mostly for debugging
These files should be available for 24 hours.