pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3901-Shot_Kronoby.ps) >>/Users/jc/w/tmp/Tune-3901-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/shottish/Shot_Kronoby.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_39013.log 263259 Log file, useful mostly for debugging
Tune-3901-Shot_Kronoby.abc 440 ABC music file with the extracted tune(s)
Tune-3901-Shot_Kronoby.ps 33946 PostScript
Tune-3901-Shot_Kronoby.txt 440 Plain-text file with the extracted tune(s)
Tune-3901-get.log 4494 Log file, useful mostly for debugging
These files should be available for 24 hours.