You can edit your view options to show 100 books per page, but then you might just not see any books.  

That's what happened to me anyway.  Even worse, the button to edit your options appears only (as far as I could tell) on the screen that now wouldn't appear!   Bad news.

So I'm wondering what to do, and I thought first I'd try to see if I could see any of my books.  So I selected "Search" and then searched my library only for a book title I knew would be there.  Whew, it worked!  There were the search results.  Even better, the search results gave me access to the page that had the option to edit my viewing preferences and I was able to change it to show only 30 books at a time. 

So, be careful with those options- LibraryThing is still in beta. LOL!