pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-499-1810_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-499-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1810_Button_Whitaker.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_49929.log 510150 Log file, useful mostly for debugging
Coll_49998.log 139053 Log file, useful mostly for debugging
Find_49994.log 1623 Log file, useful mostly for debugging
Form_49910.log 1581 Log file, useful mostly for debugging
Form_49975.log 965 Log file, useful mostly for debugging
Form_49988.log 968 Log file, useful mostly for debugging
Tune-499-1810_Button_Whitaker.abc 19590 ABC music file with the extracted tune(s)
Tune-499-1810_Button_Whitaker.ps 130836 PostScript
Tune-499-1810_Button_Whitaker.txt 19590 Plain-text file with the extracted tune(s)
Tune-499-get.log 18455 Log file, useful mostly for debugging
Tune-49944-get.log 3161 Log file, useful mostly for debugging
Tune-49958-get.log 3955 Log file, useful mostly for debugging
These files should be available for 24 hours.