3.8 to 4.1 Error (bootstrap)..?

[Gamelobby]

Upgrading from 3.8.6 to 4.1.2.. i get this error.?

Fatal error: Call to a member function hide_errors() on a non-object in /forums/includes/class_bootstrap.php(414) : eval()'d code on line 193

We did edit the config.php file, didn't upload the install.php file

Any help.
Thanks

[Lynne]

Line 414 of class_bootstrap.php:
($hook = vBulletinHook::fetch_hook('parse_templates')) ? eval($hook) : false;
So, your error is from a plugin using that hook location.

[SiteTalkZone]

you need to disable plugins and reinstall the latest ones