membership plugin redirect loop error

I am getting a redirect loop error when the membership plugin is activated when trying to login as a test user. (I can login just fine as admin.) If I disable plugin I can log in fine so I think it is membership plugin with the problem.

In the settings->general should I check anyone can register or uncheck. I did test it both ways and still got the error. But I did not delete cache memory. Could this maybe be the problem?