pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3952-DeesDandyDance.ps) >>/Users/jc/w/tmp/Tune-3952-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/DeesDandyDance.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_39523.log 277305 Log file, useful mostly for debugging
Coll_39525.log 148609 Log file, useful mostly for debugging
Coll_39526.log 281520 Log file, useful mostly for debugging
Tune-3952-DeesDandyDance.abc 1904 ABC music file with the extracted tune(s)
Tune-3952-DeesDandyDance.ps 43076 PostScript
Tune-3952-DeesDandyDance.txt 1904 Plain-text file with the extracted tune(s)
Tune-3952-get.log 4912 Log file, useful mostly for debugging
These files should be available for 24 hours.