MisterWebNet

This issue occurred, why I still don't know, but the text boxes for replying to threads, messages and comments were all showing up as plain text areas with no buttons as would be normal in WYSIWYG editors.

After checking in the admin panel that advanced WYSIWYG editor was enabled:

vBulletin Options->Message Posting Interface Options->Enable Standard & WYSIWYG Controls

(Check this for all three options)

I was still left with only a basic text area.

There is always an option within the user control panel that enables the WYSIWYG interface. Log in as a user and:

User CP->Edit Options->Message Editor Interface->Enhanced Interface

I had to do the above for admin and moderators (as I was porting over an existing database from another forum software) but to set the option as default for new registered users go back to the admin panel and:

vBulletin Options->User Registration Options->Message Editor Interface->Show Enhanced Editor Toolbar

You should now have your WYSIWYG interface.