BuddyPress.org

I am getting a whole load of errors which read:-

Notice: Undefined offset: 0 in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-catchuri.php on line 85

Notice: Trying to get property of non-object in /home/kecclub/public_html/wp-includes/query.php on line 415

Notice: Undefined offset: 0 in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-catchuri.php on line 155

Notice: Undefined offset: 1 in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-catchuri.php on line 158

Notice: Undefined property: stdClass::$displayed_user in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core.php on line 1066

Notice: Trying to get property of non-object in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core.php on line 1066

Notice: Undefined property: stdClass::$profile in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-xprofile/bp-xprofile-classes.php on line 816

Notice: Constant BP_XPROFILE_BASE_GROUP_NAME already defined in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-xprofile.php on line 101

Notice: Constant BP_XPROFILE_FULLNAME_FIELD_NAME already defined in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-xprofile.php on line 102

Notice: Undefined index: fileupload_maxk in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-avatars.php on line 35

Notice: Undefined property: stdClass::$current_group in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-groups.php on line 223

Notice: Trying to get property of non-object in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-groups.php on line 223

Notice: Undefined index: action in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-signup.php on line 571

Notice: Undefined index: action in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core.php on line 2022

Warning: Cannot modify header information – headers already sent by (output started at /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-catchuri.php:85) in /home/kecclub/public_html/wp-content/plugins/theme-my-login/includes/class-theme-my-login.php on line 181

Notice: Undefined index: bp-message in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core.php on line 1361

Notice: Undefined index: bp-message-type in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core.php on line 1364

Notice: Undefined index: new in /home/kecclub/public_html/wp-content/plugins/buddypress/bp-xprofile.php on line 253

Warning: Cannot modify header information – headers already sent by (output started at /home/kecclub/public_html/wp-content/plugins/buddypress/bp-core/bp-core-catchuri.php:85) in /home/kecclub/public_html/wp-includes/pluggable.php on line 890

What can I do to resolve these?
Many thanks

M