pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7723-Feral_Cats-Em-32-4.ps) >>/Users/jc/w/tmp/Tune-7723-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/jig/Feral_Cats-Em-32-4.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_77232.log 306810 Log file, useful mostly for debugging
Coll_77237.log 760824 Log file, useful mostly for debugging
Tune-7723-Feral_Cats-Em-32-4.abc 563 ABC music file with the extracted tune(s)
Tune-7723-Feral_Cats-Em-32-4.ps 34864 PostScript
Tune-7723-Feral_Cats-Em-32-4.txt 563 Plain-text file with the extracted tune(s)
Tune-7723-get.log 4637 Log file, useful mostly for debugging
Tune-77233-get.log 5612 Log file, useful mostly for debugging
These files should be available for 24 hours.