Compatible problem with PHP 5.4

I’m testing an application with the latest versions of WP,BP,bbpress and events manager plugin in a PHP 5.4 (FastCGI) environment. I tested this in a PHP 5.2 environment and it didn’t give any messages. But when I move to PHP 5.4 it gives following list of messages.

I think this is a php versions compatible problem. If it is; then I would like to know your recommendation of use of the Events manager plugin with this situation. Because I can explain the real situation to our client and deactivate the plugin temporary. Or if this is not a long term work, we can wait until fixing this from your end.
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Debug Bar message.

WARNING: wp-includes/class-wp.php:422 – Cannot modify header information – headers already sent by (output started at /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-permalinks.php:262)
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All other messages.

Strict Standards: Declaration of EM_Booking::can_manage() should be compatible with EM_Object::can_manage($owner_capability = false, $admin_capability = false, $user_to_check = false) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-booking.php on line 1085

Strict Standards: Declaration of EM_Bookings::get_default_search() should be compatible with EM_Object::get_default_search($defaults = Array, $array = Array) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-bookings.php on line 7

Strict Standards: Declaration of EM_Calendar::get_default_search() should be compatible with EM_Object::get_default_search($defaults = Array, $array = Array) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-calendar.php on line 413

Strict Standards: Declaration of EM_Category::can_manage() should be compatible with EM_Object::can_manage($owner_capability = false, $admin_capability = false, $user_to_check = false) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-category.php on line 282

Strict Standards: Declaration of EM_Category::get_image_url() should be compatible with EM_Object::get_image_url($size = ‘full’) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-category.php on line 282

Strict Standards: Declaration of EM_Walker_Category::start_el() should be compatible with Walker::start_el(&$output, $object, $depth = 0, $args = Array, $current_object_id = 0) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-category-taxonomy.php on line 152

Strict Standards: Non-static method EM_Category_Taxonomy::init() should not be called statically in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-category-taxonomy.php on line 103

Strict Standards: Declaration of EM_Categories::get_default_search() should be compatible with EM_Object::get_default_search($defaults = Array, $array = Array) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-categories.php on line 2

Strict Standards: Non-static method EM_Event_Post::init() should not be called statically in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-event-post.php on line 337

Strict Standards: Declaration of EM_Events::get_default_search() should be compatible with EM_Object::get_default_search($defaults = Array, $array = Array) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-events.php on line 440

Strict Standards: Declaration of EM_Events::get_post_search() should be compatible with EM_Object::get_post_search($args = Array, $filter = false, $request = Array) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-events.php on line 440

Strict Standards: Declaration of EM_Events::can_manage() should be compatible with EM_Object::can_manage($owner_capability = false, $admin_capability = false, $user_to_check = false) in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-events.php on line 440

Strict Standards: Non-static method EM_Location_Post::init() should not be called statically in /home2/weddipe4/public_html/wp-content/plugins/events-manager/classes/em-location-post.php on line 104

and more messages……………
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http://wordpress.org/plugins/events-manager/