Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1751/George_Meikle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2323-George_Meikle.ps) >>/Users/jc/w/tmp/Tune-2323-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1751/George_Meikle.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-2323-George_Meikle.abc 150 ABC music file with the extracted tune(s)
Tune-2323-George_Meikle.ps 6 PostScript
Tune-2323-George_Meikle.txt 150 Plain-text file with the extracted tune(s)
Tune-2323-get.log 8953 Log file, useful mostly for debugging
Tune-23230-get.log 8982 Log file, useful mostly for debugging
Tune-23231-get.log 5983 Log file, useful mostly for debugging
Tune-23235-AMHSI_abc2.abc 155 ABC music file with the extracted tune(s)
Tune-23235-AMHSI_abc2.txt 155 Plain-text file with the extracted tune(s)
Tune-23235-get.log 13869 Log file, useful mostly for debugging
Tune-23238-CTftF.abc 143 ABC music file with the extracted tune(s)
Tune-23238-CTftF.txt 143 Plain-text file with the extracted tune(s)
Tune-23238-get.log 13014 Log file, useful mostly for debugging
Tune-23239-get.log 3334 Log file, useful mostly for debugging
These files should be available for 24 hours.