pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2005-21402_March_in_Masaniello.ps) >>/Users/jc/w/tmp/Tune-2005-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ERM/21402_March_in_Masaniello.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_2005.log 264661 Log file, useful mostly for debugging
Coll_20051.log 292761 Log file, useful mostly for debugging
Coll_20056.log 263256 Log file, useful mostly for debugging
Coll_20058.log 263256 Log file, useful mostly for debugging
Form_20053.log 825 Log file, useful mostly for debugging
Form_20059.log 952 Log file, useful mostly for debugging
Tune-2005-21402_March_in_Masaniello.abc 793 ABC music file with the extracted tune(s)
Tune-2005-21402_March_in_Masaniello.ps 38722 PostScript
Tune-2005-21402_March_in_Masaniello.txt 793 Plain-text file with the extracted tune(s)
Tune-2005-get.log 4710 Log file, useful mostly for debugging
Tune-20053-get.log 3772 Log file, useful mostly for debugging
Tune-20054-get.log 4374 Log file, useful mostly for debugging
These files should be available for 24 hours.