pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9847-SandyBuchanansStrathspey.ps) >>/Users/jc/w/tmp/Tune-9847-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/SandyBuchanansStrathspey.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_98474.log 447313 Log file, useful mostly for debugging
Coll_98477.log 270280 Log file, useful mostly for debugging
Tune-9847-SandyBuchanansStrathspey.abc 590 ABC music file with the extracted tune(s)
Tune-9847-SandyBuchanansStrathspey.ps 38873 PostScript
Tune-9847-SandyBuchanansStrathspey.txt 590 Plain-text file with the extracted tune(s)
Tune-9847-get.log 8751 Log file, useful mostly for debugging
Tune-98470-get.log 11106 Log file, useful mostly for debugging
Tune-98473-get.log 4909 Log file, useful mostly for debugging
Tune-98474-get.log 4492 Log file, useful mostly for debugging
These files should be available for 24 hours.