pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9521-Shottish_Havero2.ps) >>/Users/jc/w/tmp/Tune-9521-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/shottish/Shottish_Havero2.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_95217.log 572355 Log file, useful mostly for debugging
Coll_95218.log 284329 Log file, useful mostly for debugging
Tune-9521-Shottish_Havero2.abc 514 ABC music file with the extracted tune(s)
Tune-9521-Shottish_Havero2.ps 34798 PostScript
Tune-9521-Shottish_Havero2.txt 514 Plain-text file with the extracted tune(s)
Tune-9521-get.log 5215 Log file, useful mostly for debugging
Tune-95210-get.log 2822 Log file, useful mostly for debugging
Tune-95214-get.log 1394 Log file, useful mostly for debugging
Tune-95216-get.log 5014 Log file, useful mostly for debugging
Tune-95217-get.log 5692 Log file, useful mostly for debugging
Tune-95219-get.log 1394 Log file, useful mostly for debugging
These files should be available for 24 hours.