pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-381-CSGBT2.ps) >>/Users/jc/w/tmp/Tune-381-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Riddell/CSGBT2.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_38106.log 373325 Log file, useful mostly for debugging
Coll_38125.log 316643 Log file, useful mostly for debugging
Coll_38139.log 372234 Log file, useful mostly for debugging
Coll_38156.log 318824 Log file, useful mostly for debugging
Coll_38169.log 373325 Log file, useful mostly for debugging
Coll_38184.log 314464 Log file, useful mostly for debugging
Coll_38197.log 374415 Log file, useful mostly for debugging
Form_38119.log 1023 Log file, useful mostly for debugging
Tune-381-CSGBT2.abc 7591 ABC music file with the extracted tune(s)
Tune-381-CSGBT2.ps 116009 PostScript
Tune-381-CSGBT2.txt 7591 Plain-text file with the extracted tune(s)
Tune-381-get.log 6219 Log file, useful mostly for debugging
Tune-38152-get.log 1397 Log file, useful mostly for debugging
Tune-38180-get.log 1384 Log file, useful mostly for debugging
Tune-38184-get.log 1384 Log file, useful mostly for debugging
Tune-38189-get.log 1384 Log file, useful mostly for debugging
Tune-38195-get.log 1373 Log file, useful mostly for debugging
Tune-38199-get.log 1384 Log file, useful mostly for debugging
These files should be available for 24 hours.