Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/song/AMHSI-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6337-AMHSI-abc1.ps) >>/Users/jc/w/tmp/Tune-6337-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/song/AMHSI-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
Tune-6337-AMHSI-abc1.abc 147 ABC music file with the extracted tune(s)
Tune-6337-AMHSI-abc1.ps 6 PostScript
Tune-6337-AMHSI-abc1.txt 147 Plain-text file with the extracted tune(s)
Tune-6337-get.log 4066 Log file, useful mostly for debugging
Tune-63371-RobertBremner_CSRCD2.abc 157 ABC music file with the extracted tune(s)
Tune-63371-RobertBremner_CSRCD2.ps 6 PostScript
Tune-63371-RobertBremner_CSRCD2.txt 157 Plain-text file with the extracted tune(s)
Tune-63371-get.log 4199 Log file, useful mostly for debugging
Tune-63372-WilliamWinterQuantocks.abc 159 ABC music file with the extracted tune(s)
Tune-63372-WilliamWinterQuantocks.ps 6 PostScript
Tune-63372-WilliamWinterQuantocks.txt 159 Plain-text file with the extracted tune(s)
Tune-63372-get.log 8971 Log file, useful mostly for debugging
Tune-63373-get.log 3490 Log file, useful mostly for debugging
Tune-63376-get.log 5929 Log file, useful mostly for debugging
These files should be available for 24 hours.