[CMS] CMS is not accessible after upgrading to 4.0.2

[nickp]

We get the following error:
Fatal error: Call to a member function get_page() on a non-object in /home/****/public_html/forums/packages/vbcms/widget/searchwidget.php on line 544

[Trevor Hannant]

Can you try

- re-downloading the package from the members area
- deleting all vBulletin files
- uploading the package to your server again (remember to rename config.php.new to config.php and add the relevant details...)
- disable all modifications/plugins/products (except vB Blog if installed)

Do you still get the error?