Forum Upgrade from v3.8.6 to v4.0.6 Problem
 

Hello - I upgraded today from 3.8.6 to 4.0.6, and after the upgrade, it looks like the default template is all messed up. It looks like a simple HTML site/layout from 1998.

Before performing the upgrade, I did disable all of my plugins/extensions, but I did not set the default style to the 'vB3' default, nor did I disable/delete the vB3 styles.

Can someone lend me some pointers as to what I can do to resolve the problem (please, don't say revert to backup!! :-D

Here are some basic stats of my board:
3.7M posts
55K users
120K threads
Raw SQL (sqldump) size: 2.7GB
PHP: v5.2.1.3
MySQL: v5.1.47

When I installed a (fresh) forum in my /beta area, everything worked fine. Granted, I did not import my database but created a new one.

If you need any additional info, please ask (I'm not sure if I've provided enough info to at least get someone going in assisting me).

Thank you very much!

-Matt