I have Membership plugin installed, and Events+, with

I have Membership plugin installed, and Events+, with visitor members ("strangers") supposed to not be able to see information, therefor redirected to the /protected page.

However, when a visitor goes to the website, an error occurs saying that there are too many redirects. Here is the Chrome browser:
Error 310 (net::ERR_TOO_MANY_REDIRECTS): There were too many redirects.