pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1751-Amazing_Grace_arr_Dave_Palladino_11.ps) >>/Users/jc/w/tmp/Tune-1751-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/corneymusers/Amazing_Grace_arr_Dave_Palladino_11.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_1751.log 67694 Log file, useful mostly for debugging
Coll_17510.log 295176 Log file, useful mostly for debugging
Coll_17511.log 66344 Log file, useful mostly for debugging
Coll_17514.log 66074 Log file, useful mostly for debugging
Form_17515.log 806 Log file, useful mostly for debugging
Tune-1751-Amazing_Grace_arr_Dave_Palladino_11.abc 325 ABC music file with the extracted tune(s)
Tune-1751-Amazing_Grace_arr_Dave_Palladino_11.ps 35049 PostScript
Tune-1751-Amazing_Grace_arr_Dave_Palladino_11.txt 325 Plain-text file with the extracted tune(s)
Tune-1751-get.log 4939 Log file, useful mostly for debugging
Tune-17517-get.log 4887 Log file, useful mostly for debugging
These files should be available for 24 hours.