Error when downloading Ultimate Branding

Hello! Thank you all in advance for your help. With your help, I have come a long way. Today I have installed the WPMU dev Dashboard so that I can try out the Ultimate Branding plug in. I am receiving an Error message. I do not know whether there is a problem with that plugin or whether my being a novice is to blame. It was just recommended to me a few hours ago, and I was behind installing WPMU dev Dashboard, but now that I am running with the Dashboard I am eager to try the Ultimate Branding plugin. Thank you.