Any templates using the default template have been purged from the database - part of our changes to make the templating system easier for beginners. There should be no need for them as this default template is already used when no custom template exists. So although the Info Center template is not listed in your admin panel it still displays on the home page. If you were to create a new, custom, info center template it would be pre-populated with the default template.
What has happened on your forum with the boards is that you were using the default, unmodified, template for all boards apart from 2. Our purging script wasn't clever enough to realise this. Not to worry though, as all that is needed is to go to "Admin -> Manage Templates -> Set Priorities". For both of your custom board templates, set them to "disabled" (I have already done this on the listed forum for you). This tells the forum to only use these templates when they are set on a board-by-board basis.
I hope that makes some kind of sense
Edit: I have applied some ad-free credits to your forum. Thanks for reporting the bug.
