pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-41122-263_GatherAndGoToCharlie.ps) >>/Users/jc/w/tmp/Tune-41122-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/AbrahamMackintosh/263_GatherAndGoToCharlie.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_41122.log 817 Log file, useful mostly for debugging
Tune-41122-263_GatherAndGoToCharlie.abc 882 ABC music file with the extracted tune(s)
Tune-41122-263_GatherAndGoToCharlie.ps 38381 PostScript
Tune-41122-263_GatherAndGoToCharlie.txt 882 Plain-text file with the extracted tune(s)
Tune-41122-get.log 4882 Log file, useful mostly for debugging
These files should be available for 24 hours.