pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-15008-1151_ALL_THE_BLUE_BONNETS.ps) >>/Users/jc/w/tmp/Tune-15008-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/BostonCollection/1151_ALL_THE_BLUE_BONNETS.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_15008.log 986 Log file, useful mostly for debugging
Tune-15008-1151_ALL_THE_BLUE_BONNETS.abc 681 ABC music file with the extracted tune(s)
Tune-15008-1151_ALL_THE_BLUE_BONNETS.ps 34705 PostScript
Tune-15008-1151_ALL_THE_BLUE_BONNETS.txt 681 Plain-text file with the extracted tune(s)
Tune-15008-get.log 4886 Log file, useful mostly for debugging
These files should be available for 24 hours.