pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2040-Shottish01_4.ps) >>/Users/jc/w/tmp/Tune-2040-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/shottish/Shottish01_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_20400.log 407970 Log file, useful mostly for debugging
Coll_20403.log 303999 Log file, useful mostly for debugging
Tune-2040-Shottish01_4.abc 559 ABC music file with the extracted tune(s)
Tune-2040-Shottish01_4.ps 36146 PostScript
Tune-2040-Shottish01_4.txt 559 Plain-text file with the extracted tune(s)
Tune-2040-get.log 4447 Log file, useful mostly for debugging
Tune-20401-get.log 5362 Log file, useful mostly for debugging
Tune-20404-get.log 4138 Log file, useful mostly for debugging
These files should be available for 24 hours.