Get error from Domain Mapping

Hello,

My site http://wizwp.com return a HTTP Error 500 when visit. I checked the error log, it shows as below:

2012/10/06 03:20:25 [error] 1877#0: *7 FastCGI sent in stderr: "PHP message: PHP Warning: include_once(dash-notice/wpmudev-dash-notification.php): failed to open stream: No such file or directory in /var/www/cn.moregrid.com/sites/wp-content/plugins/domain-mapping/domain-mapping.php on line 1262

PHP message: PHP Warning: include_once(): Failed opening 'dash-notice/wpmudev-dash-notification.php' for inclusion (include_path='.:disappointed:usr/share/pear:disappointed:usr/share/php') in /var/www/cn.moregrid.com/sites/wp-content/plugins/domain-mapping/domain-mapping.php on line 1262" while reading response header from upstream, client: 58.254.70.35, server: cn.moregrid.com, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:disappointed:var/run/php-fpm-sock/php5-fpm.sock:", host: "wizwp.com"

I have updated the plugin in last version3.0.8.1.

Please give me some help. Thanks!