pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9391-3053-Bonny_Charlie.ps) >>/Users/jc/w/tmp/Tune-9391-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3053-Bonny_Charlie.abc1.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_93918.log 1075345 Log file, useful mostly for debugging
Coll_93919.log 1147000 Log file, useful mostly for debugging
Tune-9391-3053-Bonny_Charlie.abc 1435 ABC music file with the extracted tune(s)
Tune-9391-3053-Bonny_Charlie.ps 45445 PostScript
Tune-9391-3053-Bonny_Charlie.txt 1435 Plain-text file with the extracted tune(s)
Tune-9391-get.log 4597 Log file, useful mostly for debugging
Tune-93910-get.log 3508 Log file, useful mostly for debugging
Tune-93919-2294-Capt_Kennedys_Reel.abc 953 ABC music file with the extracted tune(s)
Tune-93919-2294-Capt_Kennedys_Reel.txt 953 Plain-text file with the extracted tune(s)
Tune-93919-get.log 12941 Log file, useful mostly for debugging
These files should be available for 24 hours.