How can I stop Membership from crashing site?

When the Membership plugin is activated, it crashes my site:

Here is the error message:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 30720 bytes) in /home/davefagg/public_html/thinkyouthwork/wp-includes/pluggable.php on line 702

I am just setting it up so I may be doing something wrong.

I have added a php.ini file to wp-includes AND the Membership plugin folder to try to increase the memory limit to 128MB, but this still doesn't work.

It definitely is memberships - I've deactivated everything else.

The other plugins I have active are:
- Advanced Excerpt
- Seedprod coming soon pro
- Mailchimp widget
- bbpress
- related posts thumbnail
- wpmu dev dashboard