Infinite SEO - Function Set-time Limit Issue

Hi Team,

I just uploaded my first theme to my new WordPress MU installation. I'm getting a WARNING message, "Warning: set_time_limit() [function set-time limit]: Cannot set time limit in safe mode in /home/mathewco/public_html/wp-content/plugins/wpmu-dev-seo/wds-files/wds-sitemaps/wds-sitemaps.php on line 42" I took a screenshot of this message.

When I go to the Infinite SEO settings page, this same warning is listed at the time of that page. Any advise?

Matty J