Testing moodle 2.0 (not 1.9,5) when i try to reach the blog gives me an blank page and the error message below :

Call to deprecated method moodle_page::url_get_full. Use $this->url->out() instead.

• line 1326 of \lib\pagelib.php: call to debugging()
• line 1446 of \lib\pagelib.php: call to moodle_page->url_get_full()
• line 33 of \blog\header.php: call to page_create_object()
• line 200 of \blog\index.php: call to include()

Notice: Undefined variable: filtertype in C:\wamp\www\moodle20\blog\header.php on line 36

Notice: Undefined variable: filterselect in C:\wamp\www\moodle20\blog\header.php on line 37

Fatal error: Call to undefined method moodle_page::init_full() in C:\wamp\www\moodle20\blog\header.php on line 54