bbPress Error

I Have just FTP my bbPress plugin into wordpress plugin directory. When I activate the plugin from the admin panel. My whole website stop working and display an error message This is offline version of the same error on the live site

Fatal error: Call to undefined function is_post_type_archive() in C:\wamp\www\wordpress\wp-content\plugins\bbpress\bbp-includes\bbp-common-template.php on line 90

I have checked the same line on this php file but this is something checking for archive types of bbpress on disabling this another line of the same code just appear to at line 143 and so on..

Does any body here have received the same problem……….Waiting for your kind response.