pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-567-Charlies_Wedding.ps) >>/Users/jc/w/tmp/Tune-567-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/BruceShawyer/reel/Charlies_Wedding.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_56700.log 257739 Log file, useful mostly for debugging
Coll_5673.log 261969 Log file, useful mostly for debugging
Coll_56734.log 147647 Log file, useful mostly for debugging
Coll_56780.log 141597 Log file, useful mostly for debugging
Coll_56791.log 256329 Log file, useful mostly for debugging
Form_56795.log 854 Log file, useful mostly for debugging
Tune-567-Charlies_Wedding.abc 437 ABC music file with the extracted tune(s)
Tune-567-Charlies_Wedding.ps 40457 PostScript
Tune-567-Charlies_Wedding.txt 437 Plain-text file with the extracted tune(s)
Tune-567-get.log 4491 Log file, useful mostly for debugging
Tune-56711-get.log 5891 Log file, useful mostly for debugging
Tune-56723-get.log 4277 Log file, useful mostly for debugging
Tune-56745-get.log 3043 Log file, useful mostly for debugging
Tune-56752-get.log 3402 Log file, useful mostly for debugging
Tune-56761-get.log 3375 Log file, useful mostly for debugging
These files should be available for 24 hours.