LeagueManager IE issue with Match Statistics

I am having issues with not being able to add custom stats in Internet Explorer.

All custom stats are set up fine, but when you are entering the statistics, when you click on the ‘Insert More’ link in Internet Explorer nothing happens.

All other browsers are fine. I cannot figure this one out.
I am using WP v3.3.1 however I have installed the LeagueManager Plugin on another site of mine which is using WP v3.3.2 and the same issue occurs.

Any help would be appreciated.

Thank you.