Huge error on my forum, HELP ASAP!

[JerichoLFG]

I was upgrading from 3.8.7 to the newest 4.X vB. This is what I did...

1. Replaced the files on my server
2. Ran the upgrade file
3. Tried to go to my site

Got this error,

Warning: fetch_template() calls should be replaced by the vB_Template class. Template name: adblock_alert in [path]/includes/functions.php on line 4183

Fatal error: Call to a member function hide_errors() on a non-object in /home/blainer/public_html/forum/includes/class_bootstrap.php(414) : eval()'d code on line 155

How can I fix this?

[Brandon Sheley]

did you disable all the plugins?
in particular, the adblock one that your error is screaming about?

[JerichoLFG]

FFFFFUUUU

I did not. Is there anyway I can fix it now that the damage is done?

[HMBeaty]

Try disabling your modifications/plugins and see if you still have this problem.
Note: To temporarily disable the plugin system, edit includes/config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

[JerichoLFG]

Fixed it, thank you :D