Help, error class_core.php on line 417

[thienhi228]

1. Initially, the visit forum I get the message as follows:

vBulletin datastore error caused by one or more of the following:

You may have uploaded vBulletin files without also running the vBulletin upgrade script. If you have not run the upgrade script, do so now.
The datastore cache may have been corrupted. Run Rebuild Bitfields from tools.php, which you can upload from the do_not_upload folder of the vBulletin package.

Fatal error: vBulletin datastore cache incomplete or corrupt in [path]\includes\init.php on line 252

2. I upload Tools.php to the directory install the receipt of the notice:

Fatal error: Call to a member function fetch() on a non-object in E:\vBulletin\includes\class_bootstrap_framework.ph p on line 65

3. I've repaired class_bootstrap_framework.php, the

// Check datastore
// This should be redundant as all routes are accessed via vB_Router
if (!sizeof($vbulletin->routes) AND VBINSTALL !== true)
{
$vbulletin->datastore->fetch(array('routes'));
}

To

// Check datastore
// This should be redundant as all routes are accessed via vB_Router
//if (!sizeof($vbulletin->routes) AND VBINSTALL !== true)
//{
// $vbulletin->datastore->fetch(array('routes'));
//}

I then use the install/tools.php

I use [Bitfield Cache]

4. Then I visit forum get the message:

Fatal error: The requested language does not exist, reset via tools.php. in [path]\includes\class_core.php on line 4020

5. In tools.php, I use [Default Language], then get the message

Warning: mysql_query(): MySQL server has gone away in E:\vBulletin\includes\class_core.php on line 417

Warning: mysql_query(): Error reading result set's header in E:\vBulletin\includes\class_core.php on line 417

Then visit forum the White Page

Help me, please!