プラグインがインストールできません。。。

困ってます。プラグインの新規追加より新しいプラグインをアップロードしようとしたのですが、失敗しています。

原因としては
Warning: touch() [function.touch]: SAFE MODE Restriction in effect. The script whose uid is 10888 is not allowed to access /tmp owned by uid 0 in /virtual/cjhxn045/public_html/xn--u9j0j3a4645berya.com/wordpress/wp-admin/includes/file.php on line 174

Warning: fileowner() [function.fileowner]: SAFE MODE Restriction in effect. The script whose uid is 10888 is not allowed to access /tmp owned by uid 0 in /virtual/cjhxn045/public_html/xn--u9j0j3a4645berya.com/wordpress/wp-admin/includes/file.php on line 628

Warning: fileowner() [function.fileowner]: stat failed for /tmp/1241170167 in /virtual/cjhxn045/public_html/xn--u9j0j3a4645berya.com/wordpress/wp-admin/includes/file.php on line 628

Warning: unlink() [function.unlink]: SAFE MODE Restriction in effect. The script whose uid is 10888 is not allowed to access /tmp owned by uid 0 in /virtual/cjhxn045/public_html/xn--u9j0j3a4645berya.com/wordpress/wp-admin/includes/file.php on line 630

上記の内容が関わりあると思うのですが、何をそうするのか意味がわかりません。
助けてください。