Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/_/Kohlers.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2609-Kohlers.ps) >>/Users/jc/w/tmp/Tune-2609-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/_/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-2609-Kohlers.abc 141 ABC music file with the extracted tune(s)
Tune-2609-Kohlers.ps 6 PostScript
Tune-2609-Kohlers.txt 141 Plain-text file with the extracted tune(s)
Tune-2609-get.log 3985 Log file, useful mostly for debugging
Tune-26090-get.log 4677 Log file, useful mostly for debugging
Tune-26091-TelephoneHornpipe.abc 413 ABC music file with the extracted tune(s)
Tune-26091-TelephoneHornpipe.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-26091-TelephoneHornpipe.ps 36935 PostScript
Tune-26091-TelephoneHornpipe.txt 413 Plain-text file with the extracted tune(s)
Tune-26091-get.log 5474 Log file, useful mostly for debugging
Tune-26094-get.log 5344 Log file, useful mostly for debugging
These files should be available for 24 hours.