pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4599-10432_Marys_Dream.ps) >>/Users/jc/w/tmp/Tune-4599-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ERM/10432_Marys_Dream.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_4599.log 263256 Log file, useful mostly for debugging
Coll_45991.log 259043 Log file, useful mostly for debugging
Coll_45992.log 140868 Log file, useful mostly for debugging
Coll_45996.log 263256 Log file, useful mostly for debugging
Form_45990.log 852 Log file, useful mostly for debugging
Form_45992.log 855 Log file, useful mostly for debugging
Form_45999.log 966 Log file, useful mostly for debugging
Tune-4599-10432_Marys_Dream.abc 607 ABC music file with the extracted tune(s)
Tune-4599-10432_Marys_Dream.ps 36867 PostScript
Tune-4599-10432_Marys_Dream.txt 607 Plain-text file with the extracted tune(s)
Tune-4599-get.log 4499 Log file, useful mostly for debugging
Tune-45990-get.log 4911 Log file, useful mostly for debugging
Tune-45998-get.log 58142 Log file, useful mostly for debugging
Tune-45999-get.log 9949 Log file, useful mostly for debugging
These files should be available for 24 hours.