Getting error while installation

Here i noted the error i am getting
Warning: require_once(.//admin/class-log-viewer-admin.php) [function.require-once]: failed to open stream: No such file or directory in /home/bobmarri/public_html/PRO/2/wp-content/plugins/log-viewer/includes/class-debugbar-integration.php on line 11

Fatal error: require_once() [function.require]: Failed opening required ‘.//admin/class-log-viewer-admin.php’ (include_path=’.:/opt/php52/lib/php’) in /home/bobmarri/public_html/PRO/2/wp-content/plugins/log-viewer/includes/class-debugbar-integration.php on line 11

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