You're missing templates in the style, reimport the default MyBB style via the AdminCP and force it on your users.
I see no problems anywhere, forum shows fine for me.
Should also not that you're breaking vB's copyright by using that theme, unless you want them to shut your site down I suggest you get rid of it.
I seen that theme being showcased on MyBBSource.com . It was removed, but I'll have to likely contact vBulletin about it and see what they say. Dunno why people think that they can use such a theme on MyBB.
Youre forum is down. Not Work.