pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8089-1779_Straight.ps) >>/Users/jc/w/tmp/Tune-8089-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1779_Straight.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_80890.log 469609 Log file, useful mostly for debugging
Tune-8089-1779_Straight.abc 18554 ABC music file with the extracted tune(s)
Tune-8089-1779_Straight.ps 129986 PostScript
Tune-8089-1779_Straight.txt 18554 Plain-text file with the extracted tune(s)
Tune-8089-get.log 17086 Log file, useful mostly for debugging
These files should be available for 24 hours.