pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-51013-DukeOfKentsWaltz.ps) >>/Users/jc/w/tmp/Tune-51013-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/england/DukeOfKentsWaltz.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_51013.log 410780 Log file, useful mostly for debugging
Form_51013.log 813 Log file, useful mostly for debugging
Tune-51013-DukeOfKentsWaltz.abc 1534 ABC music file with the extracted tune(s)
Tune-51013-DukeOfKentsWaltz.ps 44572 PostScript
Tune-51013-DukeOfKentsWaltz.txt 1534 Plain-text file with the extracted tune(s)
Tune-51013-get.log 5591 Log file, useful mostly for debugging
These files should be available for 24 hours.