Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/AmericanSD/Collections.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6293-Collections.ps) >>/Users/jc/w/tmp/Tune-6293-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AmericanSD/Collections.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_62930.log 1012 Log file, useful mostly for debugging
Tune-6293-Collections.abc 154 ABC music file with the extracted tune(s)
Tune-6293-Collections.ps 6 PostScript
Tune-6293-Collections.txt 154 Plain-text file with the extracted tune(s)
Tune-6293-get.log 5454 Log file, useful mostly for debugging
Tune-62931-get.log 4230 Log file, useful mostly for debugging
Tune-62934-get.log 5364 Log file, useful mostly for debugging
Tune-62935-get.log 7407 Log file, useful mostly for debugging
Tune-62939-get.log 1469 Log file, useful mostly for debugging
These files should be available for 24 hours.