Can't delete texts under Network Wide Text Change

Hello,

I have a network setup and everything is working fine, but I found 1 error: I can't delete any of the texts I have in Network Wide Text Change of the Ultimate Branding plugin. I can add them just fine, and the text is being replaced, but I cannot click the checkbox to delete a text. Clicking the checkbox only makes it open/close. I tried to see if firebug showed any errors but I saw none.