pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-10871-21474_WITTLE_DEAN.ps) >>/Users/jc/w/tmp/Tune-10871-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21474_WITTLE_DEAN.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_10871.log 835 Log file, useful mostly for debugging
Tune-10871-21474_WITTLE_DEAN.abc 554 ABC music file with the extracted tune(s)
Tune-10871-21474_WITTLE_DEAN.ps 36890 PostScript
Tune-10871-21474_WITTLE_DEAN.txt 554 Plain-text file with the extracted tune(s)
Tune-10871-get.log 4595 Log file, useful mostly for debugging
These files should be available for 24 hours.