Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/hdr/Kohlers.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4738-Kohlers.ps) >>/Users/jc/w/tmp/Tune-4738-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/hdr/Kohlers.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-4738-Kohlers.abc 143 ABC music file with the extracted tune(s)
Tune-4738-Kohlers.ps 6 PostScript
Tune-4738-Kohlers.txt 143 Plain-text file with the extracted tune(s)
Tune-4738-get.log 7349 Log file, useful mostly for debugging
Tune-47380-get.log 3190 Log file, useful mostly for debugging
Tune-47381-get.log 14326 Log file, useful mostly for debugging
Tune-47382-get.log 9423 Log file, useful mostly for debugging
Tune-47384-get.log 3769 Log file, useful mostly for debugging
Tune-47385-SocialDances2002.abc 161 ABC music file with the extracted tune(s)
Tune-47385-SocialDances2002.ps 6 PostScript
Tune-47385-SocialDances2002.txt 161 Plain-text file with the extracted tune(s)
Tune-47385-get.log 4282 Log file, useful mostly for debugging
Tune-47388-get.log 4059 Log file, useful mostly for debugging
Tune-47388-newpage.abc 145 ABC music file with the extracted tune(s)
Tune-47388-newpage.ps 6 PostScript
Tune-47388-newpage.txt 145 Plain-text file with the extracted tune(s)
Tune-47389-get.log 2868 Log file, useful mostly for debugging
These files should be available for 24 hours.