very strange behavior of last version 2.1 beta 2

Dear friends,
after last update I have big problems with my membership site (Membership plugin 2.1 beta 2, standard WordPress 3.2.1 site).

The original registration page did not work. I had to make a new registration page to solve it.

Some higher membership levels cannot access a part of a content, which was accessible before. I deleted these levels and create clones from lower functional levels. No positive effect. Cloned levels do not work.

Very strange

It generates big problems to my users. Pls help me.

Thanks,
Martin