compatibility with buddypress and BP Disable Activation, BP Xtra Signup on

we have buddypress with wordpress version 3.5.1 we could not get compatibility with buddypress and BP Disable Activation, BP Xtra Signup
on
{BP Disable Activation
Fatal error: Call-time pass-by-reference has been removed; If you would like to pass argument by reference, modify the declaration of do_action(). in /home/jjssco/public_html/wp-content/plugins/bp-disable-activation/bp-disable-activation.php on line 130
and
Xtra Signup we get
Warning: Creating default object from empty value in /home/jjssco/public_html/wp-content/plugins/bp-xtra-signup/bp-xtra-signup.php on line 183 }