Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/HUTB1/Kohlers1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2859-Kohlers1.ps) >>/Users/jc/w/tmp/Tune-2859-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/HUTB1/Kohlers1.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_28596.log 1652 Log file, useful mostly for debugging
Tune-2859-Kohlers1.abc 146 ABC music file with the extracted tune(s)
Tune-2859-Kohlers1.ps 6 PostScript
Tune-2859-Kohlers1.txt 146 Plain-text file with the extracted tune(s)
Tune-2859-get.log 5427 Log file, useful mostly for debugging
Tune-28592-get.log 4014 Log file, useful mostly for debugging
Tune-28593-get.log 4455 Log file, useful mostly for debugging
Tune-28594-get.log 3318 Log file, useful mostly for debugging
Tune-28596-get.log 4329 Log file, useful mostly for debugging
Tune-28597-get.log 8023 Log file, useful mostly for debugging
These files should be available for 24 hours.