Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book03/George_Meikle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7792-George_Meikle.ps) >>/Users/jc/w/tmp/Tune-7792-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book03/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
Find_77924.log 1253 Log file, useful mostly for debugging
Find_77928.log 1253 Log file, useful mostly for debugging
Form_77924.log 944 Log file, useful mostly for debugging
Tune-7792-George_Meikle.abc 152 ABC music file with the extracted tune(s)
Tune-7792-George_Meikle.ps 6 PostScript
Tune-7792-George_Meikle.txt 152 Plain-text file with the extracted tune(s)
Tune-7792-get.log 4137 Log file, useful mostly for debugging
Tune-77921-get.log 1444 Log file, useful mostly for debugging
Tune-77923-get.log 2767 Log file, useful mostly for debugging
Tune-77927-get.log 1378 Log file, useful mostly for debugging
Tune-77928-get.log 1400 Log file, useful mostly for debugging
These files should be available for 24 hours.