Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Potpourri/Remick.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9442-Remick.ps) >>/Users/jc/w/tmp/Tune-9442-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Potpourri/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
Tune-9442-Remick.abc 148 ABC music file with the extracted tune(s)
Tune-9442-Remick.ps 6 PostScript
Tune-9442-Remick.txt 148 Plain-text file with the extracted tune(s)
Tune-9442-get.log 4006 Log file, useful mostly for debugging
Tune-94422-get.log 4454 Log file, useful mostly for debugging
Tune-94423-CSGBT_1794-V2.abc 150 ABC music file with the extracted tune(s)
Tune-94423-CSGBT_1794-V2.ps 6 PostScript
Tune-94423-CSGBT_1794-V2.txt 150 Plain-text file with the extracted tune(s)
Tune-94423-get.log 4058 Log file, useful mostly for debugging
Tune-94425-get.log 6831 Log file, useful mostly for debugging
Tune-94427-get.log 4532 Log file, useful mostly for debugging
Tune-94428-get.log 4256 Log file, useful mostly for debugging
These files should be available for 24 hours.