pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5846-KendallsHornpipe.ps) >>/Users/jc/w/tmp/Tune-5846-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/KendallsHornpipe.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_58466.log 280115 Log file, useful mostly for debugging
Coll_58467.log 987354 Log file, useful mostly for debugging
Tune-5846-KendallsHornpipe.abc 2290 ABC music file with the extracted tune(s)
Tune-5846-KendallsHornpipe.ps 50370 PostScript
Tune-5846-KendallsHornpipe.txt 2290 Plain-text file with the extracted tune(s)
Tune-5846-get.log 4985 Log file, useful mostly for debugging
These files should be available for 24 hours.