pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77755-FF_revo2.ps) >>/Users/jc/w/tmp/Tune-77755-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/scand/FF_revo2.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-77755-FF_revo2.abc 1435 ABC music file with the extracted tune(s)
Tune-77755-FF_revo2.ps 47576 PostScript
Tune-77755-FF_revo2.txt 1435 Plain-text file with the extracted tune(s)
Tune-77755-get.log 5628 Log file, useful mostly for debugging
These files should be available for 24 hours.