Multiple warnings and errors when activating plugin

HI! I have

"Warning: is_readable() [function.is-readable]: open_basedir restriction in effect. File(D:\InetPub\vhosts\sitename\httpdocs\wordpress/wp-content/plugins/D:\InetPub\vhosts\sitename\httpdocs\wordpress\wp-content\plugins\facebook/languages/facebook-en_EN.mo) is not within the allowed path(s): (D:/InetPub/vhosts/sitename\;C:\Windows\Temp\) in D:\InetPub\vhosts\sitename\httpdocs\wordpress\wp-includes\l10n.php on line 339

after activating facebook plug in head if page.

Warning: file_exists() [
function.file-exists
]: open_basedir restriction in effect. File(D:\InetPub\vhosts\sitename\httpdocs\wordpress/wp-content/plugins/https://www.facebook.com/insights/) is not within the allowed path(s): (D:/InetPub/vhosts/sitename\;C:\Windows\Temp\) in D:\InetPub\vhosts\sitename\httpdocs\wordpress\wp-admin\menu-header.php on line 153

and many other errors and warnings. Can somebody point me to the reason of these and what can I do about them ?
Thanks .

http://wordpress.org/extend/plugins/facebook/