UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support Smarty Error unable to write to $compile_dir

Im getting so many errors today.

New error:

Error #256: Smarty error: unable to write to $compile_dir '/var/www/html/domain/forums/templates/compile'. Be sure $compile_dir is writable by the web server user.
Line: 1092
File: /var/www/html/domain/forums/libs/smarty/Smarty.class.php


this directory is set to CHMOD 777 so I dont know why its giving me this