Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book03/Remick.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3608-Remick.ps) >>/Users/jc/w/tmp/Tune-3608-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book03/Remick.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_36080.log 1936 Log file, useful mostly for debugging
Find_36081.log 1649 Log file, useful mostly for debugging
Form_36085.log 844 Log file, useful mostly for debugging
Tune-3608-Remick.abc 145 ABC music file with the extracted tune(s)
Tune-3608-Remick.ps 6 PostScript
Tune-3608-Remick.txt 145 Plain-text file with the extracted tune(s)
Tune-3608-get.log 3992 Log file, useful mostly for debugging
Tune-36081-get.log 5712 Log file, useful mostly for debugging
Tune-36084-get.log 6069 Log file, useful mostly for debugging
Tune-36086-get.log 4177 Log file, useful mostly for debugging
These files should be available for 24 hours.