Membership plugin register error code and misfiring

I have a few things going haywire on my site.

1. After signing up, I am getting this error in the header:

Warning: array_map() [function.array-map]: Argument #2 should be an array in /home/godiape7/public_html/wp-content/plugins/membership/membershipincludes/classes/class.urlgroup.php on line 184

Warning: Invalid argument supplied for foreach() in /home/godiape7/public_html/wp-content/plugins/membership/membershipincludes/classes/class.urlgroup.php on line 185

2. The communication being sent to new members does not correspond with the subscription signed up for. In other words, I sign up for a subscription and receive the message from a different subscription. Not only that, but over the course of an hour, I start to receive every notification from all subscriptions, telling me I have signed up for each subscription.